Can't view some posts from Mastodon and issue on subject

[ska@community.nodebb.org]

Hello,
I believe since updating NodeBB to v4.6.0 (before, everything seemed to work) I've been having some issues with my NodeBB instance and some Mastodon posts.

The first problem is that some posts simply don't appear, not even when searching for them. For example:

https://poliversity.it/@skariko/115378312894874276 if I search for it on citiverse.it it doesn't appear, whereas if I search for it here on community.nodebb.org it appears regularly.

From my server I receive it like this:

curl -s -H "Accept: application/activity+json" https://poliversity.it/@skariko/115378312894874276 | python3 -m json.tool
{
    "@context": [
        "https://www.w3.org/ns/activitystreams",
        {
            "ostatus": "http://ostatus.org#",
            "atomUri": "ostatus:atomUri",
            "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
            "conversation": "ostatus:conversation",
            "sensitive": "as:sensitive",
            "toot": "http://joinmastodon.org/ns#",
            "votersCount": "toot:votersCount",
            "litepub": "http://litepub.social/ns#",
            "directMessage": "litepub:directMessage",
            "blurhash": "toot:blurhash",
            "focalPoint": {
                "@container": "@list",
                "@id": "toot:focalPoint"
            }
        }
    ],
    "id": "https://poliversity.it/users/skariko/statuses/115378312894874276",
    "type": "Note",
    "summary": null,
    "inReplyTo": null,
    "published": "2025-10-15T13:02:18Z",
    "url": "https://poliversity.it/@skariko/115378312894874276",
    "attributedTo": "https://poliversity.it/users/skariko",
    "to": [
        "https://www.w3.org/ns/activitystreams#Public"
    ],
    "cc": [
        "https://poliversity.it/users/skariko/followers",
        "https://feddit.it/c/informatica",
        "https://feddit.it/c/informatica/followers"
    ],
    "sensitive": false,
    "atomUri": "https://poliversity.it/users/skariko/statuses/115378312894874276",
    "inReplyToAtomUri": null,
    "conversation": "tag:poliversity.it,2025-10-15:objectId=9243092:objectType=Conversation",
    "content": "<p>Il vostro amore per Tor sar\u00e0 raddoppiato!</p><p><span class="\&quot;h-card\&quot;" translate="\&quot;no\&quot;"><a href="\&quot;https://feddit.it/c/informatica\&quot;" class="\&quot;u-url" rel="\&quot;nofollow" target="\&quot;_blank\&quot;">@<span>informatica</span></a></span> </p><p>Come (quasi) tutti gli anni \u00e8 possibile fare una <a href="\&quot;https://donate.torproject.org/\&quot;" target="\&quot;_blank\&quot;" rel="\">donazione a Tor</a> che verr\u00e0 raddoppiata da <a href="\&quot;https://powerupprivacy.com/\&quot;" target="\&quot;_blank\&quot;" rel="\&quot;nofollow">alcuni supporter speciali</a>.</p><p>In                                            sostanza se voi donate 25\u20ac alcuni supporter raddoppiare la donazione donando a loro volta altri 25\u20ac e lo faranno fino a un totale 250.000\u20ac!</p><p>Se avevate intenzione dunque di                                            fare una donazione \u00e8 probabilmente questo il periodo migliore. E, in base a quanto donerete, potrete ricevere a casa anche alcuni regali come adesivi, magliette, cappellini o felpe. \ud83d\                                           udc9c</p><p><a href="\&quot;https://blog.torproject.org/2025-fundraiser-donations-matched/\&quot;" target="\&quot;_blank\&quot;" rel="\&quot;nofollow" translate="\&quot;no\&quot;"><span class="\&quot;invisible\&quot;">https://</span><span class="\&quot;ellipsis\&quot;">blog.torproject.org/2025-fundr</span><span class="\&quot;invisible\&quot;">aiser-donations-matched/</span></a></p>",
    "contentMap": {
        "it": "<p>Il vostro amore per Tor sar\u00e0 raddoppiato!</p><p><span class="\&quot;h-card\&quot;" translate="\&quot;no\&quot;"><a href="\&quot;https://feddit.it/c/informatica\&quot;" class="\&quot;u-url" rel="\&quot;nofollow" target="\&quot;_blank\&quot;">@<span>informatica</span></a></span> </p><p>Come (quasi) tutti gli anni \u00e8 possibile fare una <a href="\&quot;https://donate.torproject.org/\&quot;" target="\&quot;_blank\&quot;" rel="\&quot;">donazione a Tor</a> che verr\u00e0 raddoppiata da <a href="\&quot;https://powerupprivacy.com/\&quot;" target="\&quot;_blank\&quot;" rel="\&quot;nofollow">alcuni supporter speciali</a>.</p><p>In                                            sostanza se voi donate 25\u20ac alcuni supporter raddoppiare la donazione donando a loro volta altri 25\u20ac e lo faranno fino a un totale 250.000\u20ac!</p><p>Se avevate intenzione dunque di f                                           are una donazione \u00e8 probabilmente questo il periodo migliore. E, in base a quanto donerete, potrete ricevere a casa anche alcuni regali come adesivi, magliette, cappellini o felpe. \ud83d\u                                           dc9c</p><p><a href="\&quot;https://blog.torproject.org/2025-fundraiser-donations-matched/\&quot;" target="\&quot;_blank\&quot;" rel="\&quot;nofollow" translate="\&quot;no\&quot;"><span class="\&quot;invisible\&quot;">https://</span><span class="\&quot;ellipsis\&quot;">blog.torproject.org/2025-fundr</span><span class="\&quot;invisible\&quot;">aiser-donations-matched/</span></a></p>"
    },
    "updated": "2025-10-15T13:05:15Z",
    "attachment": [
        {
            "type": "Document",
            "mediaType": "image/png",
            "url": "https://s3.poliversity.it/media_attachments/files/115/378/301/124/619/993/original/73832f78ae58b0d0.png",
            "name": "Un'immagine con uno sfondo scuro che presenta il testo \"Free the Internet\" in carattere pixelato. Al centro c'\u00e8 un simbolo di una catena spezzata, circondato da un el                                           emento grafico a stella, con colori vivaci viola e verde.",
            "blurhash": "U86bDUof01RjWUa#jcocD%ay-;ofxuoeR%Rl",
            "focalPoint": [
                0.0,
                0.0
            ],
            "width": 940,
            "height": 529
        }
    ],
    "tag": [
        {
            "type": "Mention",
            "href": "https://feddit.it/c/informatica",
            "name": "[informatica@feddit.it](https://community.nodebb.org/category/informatica@feddit.it)"
        }
    ],
    "replies": {
        "id": "https://poliversity.it/users/skariko/statuses/115378312894874276/replies",
        "type": "Collection",
        "first": {
            "type": "CollectionPage",
            "next": "https://poliversity.it/users/skariko/statuses/115378312894874276/replies?only_other_accounts=true&amp;page=true",
            "partOf": "https://poliversity.it/users/skariko/statuses/115378312894874276/replies",
            "items": []
        }
    },
    "likes": {
        "id": "https://poliversity.it/users/skariko/statuses/115378312894874276/likes",
        "type": "Collection",
        "totalItems": 0
    },
    "shares": {
        "id": "https://poliversity.it/users/skariko/statuses/115378312894874276/shares",
        "type": "Collection",
        "totalItems": 1
    }
}

The second problem, which I don't know if it's connected to this or not, is that now topics coming from Mastodon have a strange code in the subject, meaning they contain 'n and everything is inserted into the title.

Example:
This post on Mastodon https://poliversity.it/@trapiantodipelo/115377451751168706 appears on Citiverse in this way, with an unreadable title: https://citiverse.it/topic/ca60c417-ab8e-4b64-84f3-e8c9e158ddaf/trovati-i-resti-della-terra-primordiale-n@scienza-hashtag-n-n-risalgono-a-4-5-miliardi-di-anni-fa-riconosciuti-dalla-firma-chimica-nelle-rocce-n

Remains of primordial Earth found'n@scienza (HASHTAG)'n'n They date back 4.5 billion years, recognised by the chemical signature in the rocks'n

Even in this case, I read it from the server like this:

curl -s -H "Accept: application/activity+json" https://poliversity.it/@trapiantodipelo/115377451751168706 | python3 -m json.tool
{
    "@context": [
        "https://www.w3.org/ns/activitystreams",
        {
            "ostatus": "http://ostatus.org#",
            "atomUri": "ostatus:atomUri",
            "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
            "conversation": "ostatus:conversation",
            "sensitive": "as:sensitive",
            "toot": "http://joinmastodon.org/ns#",
            "votersCount": "toot:votersCount",
            "litepub": "http://litepub.social/ns#",
            "directMessage": "litepub:directMessage"
        }
    ],
    "id": "https://poliversity.it/users/trapiantodipelo/statuses/115377451751168706",
    "type": "Note",
    "summary": null,
    "inReplyTo": null,
    "published": "2025-10-15T09:23:18Z",
    "url": "https://poliversity.it/@trapiantodipelo/115377451751168706",
    "attributedTo": "https://poliversity.it/users/trapiantodipelo",
    "to": [
        "https://www.w3.org/ns/activitystreams#Public"
    ],
    "cc": [
        "https://poliversity.it/users/trapiantodipelo/followers",
        "https://feddit.it/c/scienza",
        "https://feddit.it/c/scienza/followers"
    ],
    "sensitive": false,
    "atomUri": "https://poliversity.it/users/trapiantodipelo/statuses/115377451751168706",
    "inReplyToAtomUri": null,
    "conversation": "tag:poliversity.it,2025-10-15:objectId=9239465:objectType=Conversation",
    "content": "<p><a href="\&quot;https://www.ansa.it/canale_scienza/notizie/terra_poli/2025/10/15/trovati-i-resti-della-terra-primordiale_81669da1-314e-4e50-856b-8aa51bd85138.html\&quot;" target="\&quot;_blank\" rel="\&quot;nofollow">Trovati i resti della Terra primordiale</a></p><p><span class="\&quot;h-card\&quot;" translate="\&quot;no\&quot;"><a href="\&quot;https://feddit.it/c/scienza\&quot;" class="\&quot;u-url" rel="\&quot;nofoll" target="\&quot;_blank\&quot;">@<span>scienza</span></a></span> (HASHTAG)</p><blockquote><p>Risalgono a 4,5 miliardi di anni fa,  riconosciuti dalla firma chimica nelle rocce</p></blockquote>",
    "contentMap": {
        "it": "<p><a href="\&quot;https://www.ansa.it/canale_scienza/notizie/terra_poli/2025/10/15/trovati-i-resti-della-terra-primordiale_81669da1-314e-4e50-856b-8aa51bd85138.html\&quot;" target="\&quot;_blank\&quot;" rel="\&quot;nofollow">Trovati i resti della Terra primordiale</a></p><p><span class="\&quot;h-card\&quot;" translate="\&quot;no\&quot;"><a href="\&quot;https://feddit.it/c/scienza\&quot;" class="\&quot;u-url" rel="\&quot;nofollo" target="\&quot;_blank\&quot;">@<span>scienza</span></a></span> (HASHTAG)</p><blockquote><p>Risalgono a 4,5 miliardi di anni fa,  riconosciuti dalla firma chimica nelle rocce</p></blockquote>"
    },
    "attachment": [],
    "tag": [
        {
            "type": "Mention",
            "href": "https://feddit.it/c/scienza",
            "name": "[scienza@feddit.it](https://community.nodebb.org/category/scienza@feddit.it)"
        }
    ],
    "replies": {
        "id": "https://poliversity.it/users/trapiantodipelo/statuses/115377451751168706/replies",
        "type": "Collection",
        "first": {
            "type": "CollectionPage",
            "next": "https://poliversity.it/users/trapiantodipelo/statuses/115377451751168706/replies?only_other_accounts=true&amp;page=true",
            "partOf": "https://poliversity.it/users/trapiantodipelo/statuses/115377451751168706/replies",
            "items": []
        }
    },
    "likes": {
        "id": "https://poliversity.it/users/trapiantodipelo/statuses/115377451751168706/likes",
        "type": "Collection",
        "totalItems": 0
    },
    "shares": {
        "id": "https://poliversity.it/users/trapiantodipelo/statuses/115377451751168706/shares",
        "type": "Collection",
        "totalItems": 1
    }
}

Does this only happen to me or is it a common problem? How could it be solved?

[ska@community.nodebb.org]

I'm adding more logs that I found and that I think might somehow help understand something, at least regarding the fact that some posts are not visible.

However, I haven't found anything on the incorrect parsing.

grep -i "unable to acquire lock" logs/output.log
2025-10-04T15:54:54.726Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/box464/statuses/115316705107843700
2025-10-04T18:23:51.471Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/fedizen/statuses/115317291110991552
2025-10-05T07:53:54.654Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://forum.linux.it/ap/object/17eeb3c3ed48b3f41b080a308936a84d
2025-10-05T19:57:39.806Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/7cb32204c92d957adc823bc8a964730d
2025-10-06T07:46:18.050Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/2a2090ece9e000f3cf0855736b0bfbf4
2025-10-06T09:44:32.005Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://poliversity.it/users/trapiantodipelo/statuses/115326574246730725
2025-10-06T09:44:32.072Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://poliversity.it/users/trapiantodipelo/statuses/115326574246730725
2025-10-06T11:48:58.814Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://forum.linux.it/ap/object/4b0aea93be6a37f2db073ed415c04965
2025-10-06T12:30:23.040Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/grishka/statuses/115327226016372765
2025-10-07T02:00:49.238Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/box464/statuses/115330412507936865
2025-10-07T11:31:59.242Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/5ec982142e3a056d8bb127cfcf36281d
2025-10-07T11:38:53.251Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/bb1a62d713fe492dc10f73ac733d55ca
2025-10-07T13:36:14.299Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://metalhead.club/users/mariusor/statuses/115333146819416742
2025-10-07T15:46:37.984Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/pfefferle/statuses/115333659892854776
2025-10-07T17:27:52.869Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.uno/users/informapirata/statuses/115334058027689854
2025-10-07T17:27:53.022Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.uno/users/informapirata/statuses/115334058027689854
2025-10-07T20:14:02.870Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://hachyderm.io/users/thisismissem/statuses/115334711305165245
2025-10-08T02:08:56.227Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/dansup/statuses/115336107029797426
2025-10-08T05:40:56.699Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/box464/statuses/115336940507096871
2025-10-08T06:37:26.225Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://forum.linux.it/ap/object/17c7bb1ae58a08c8cfe935379303b169
2025-10-08T06:57:21.911Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/73092bfb1d51be7b740952b1e00aa3d3
2025-10-08T09:05:07.203Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/4f86c5d50ff2fc78808e38238b3404fa
2025-10-08T11:08:47.106Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/dansup/statuses/115338228698820855
2025-10-08T15:42:48.823Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://gultsch.social/users/daniel/statuses/115339306932607421
2025-10-08T18:26:06.676Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://pan.rent/users/tommi/statuses/115339948843511904
2025-10-08T18:42:39.442Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/dc665fa6c73ce9d2b0da5369cb61a3d4
2025-10-09T18:58:44.679Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.uno/users/informapirata/statuses/115345740139209995
2025-10-09T18:58:44.742Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.uno/users/informapirata/statuses/115345740139209995
2025-10-10T06:55:28.486Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://www.lealternative.net/?p=67467
2025-10-11T08:16:52.182Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://poliversity.it/users/cubilotto/statuses/115354540980960888
2025-10-11T11:36:15.955Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://fe.disroot.org/objects/0abb79c4-62c7-4d4a-9795-a20b993d7a88
2025-10-13T04:55:10.169Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://poliverso.org/objects/0477a01e-6268-ec86-1b29-4b2333302696
2025-10-13T04:55:10.222Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://poliverso.org/objects/0477a01e-6268-ec86-1b29-4b2333302696
2025-10-13T16:23:32.432Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://poliverso.org/objects/0477a01e-1668-ed27-737e-279659830410
2025-10-13T16:23:32.493Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://poliverso.org/objects/0477a01e-1668-ed27-737e-279659830410
2025-10-14T05:36:53.830Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.social/users/dansup/statuses/115370898659404174
2025-10-14T15:16:26.987Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/e86ee553692823714f4d2f5f52f40def
2025-10-14T22:23:30.810Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://discuti.gatti.ninja/ap/object/1f1e21e0895df2c49c0c43aa9e8a49a7
2025-10-15T12:22:44.573Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.uno/users/informapirata/statuses/115378157032223224
2025-10-15T12:22:44.638Z [4567/10208] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://mastodon.uno/users/informapirata/statuses/115378157032223224
2025-10-15T18:19:09.355Z [4567/102584] - warn: [activitypub/notes.assert] Unable to acquire lock, skipping processing of https://poliversity.it/users/skariko/statuses/115378218263064333

[ska@community.nodebb.org]

I'm adding another thought regarding title parsing.

It seems to only play this "trick" with the modified version of Mastodon called Glitch (which is in use on Poliversity) and Friendica, and not on classic Mastodon.

However, it didn't do this in previous versions and titles were displayed correctly.

[julian@community.nodebb.org]

ska can you update to the latest development commit and try again?

[ska@community.nodebb.org]

julian hello, yes I just tried the latest update and it seems to work, thanks. I'm mainly referring to the 'n' code within the titles, it seems to no longer appear.

Regarding the posts that don't appear: I had enabled the Askimet plugin and maybe that could have something to do with it. Now I've disabled it and I'll see if other posts don't appear in the future,
thanks!

[ska@community.nodebb.org]

julian anyway, I still believe it's not entirely resolved because, for example, some posts, like this one:

https://poliversity.it/@memento/115384126299404042

Display very poorly on NodeBB, mixing links, title, and tags all together:

https://citiverse.it/topic/27568d7f-c702-49a0-b608-705965a6bf66/alzheimer-una-terapia-sperimentale-mostra-risultati-rivoluzionari-nei-topihttps-leganerd.com-2025-10-16-alzheimer-una-terapia-sperimentale-mostra-risultati-rivoluzionari-nei-topi-@scienza

On other posts, however, the 'n' problem seems to have been resolved.

[julian@community.nodebb.org]

ska for that last one, it is because there is no sentence to parse out.

For some posts they are not structured in a way that makes it easy to generate a title.

I will try to improve things over time.