"Blocked Post" for post replying to me from a user with no block relationship (probably related to old abusive blocklists)

[AaronSofaer]

Steps to Reproduce

1. Navigate in the browser to https://bsky.app/profile/exxzackly.bsky.social/post/3likoaox7jk2z
2. Observe that this post says the reply is in response to a blocked post
3. Note that there is no block relationship between the user in question (exxzackly.bsky.social‬) and me (aaronsofaer.bsky.social), whom the post is replying to

Attachments

A screenshot of the post, showing that it's replying to something the app says the user has blocked:

A screenshot in my notifications, showing that it correctly attributes it as a reply to me:

A screenshot of the user's profile, showing that neither of us has the other blocked and the profile loads as normal:

What platform(s) does this occur on?

Web (Desktop)

Device Info

Firefox Desktop

What version of the app are you using?

1.98.0

Additional Information

zack (the user in question) was once subscribed to a now-notorious blocklist whose deletion has spawned many issues. The issues related to this were supposed to be addressed by bluesky-social/atproto#3192 a couple of weeks ago, but this remains and I suspect it's related.

[surfdude29]

That does sound like maybe the issue hasn't been fully fixed by bluesky-social/atproto#3192.

As a temporary workaround – of course the root cause needs to be fixed – zack might want to have a look through the listblock records in their repo on PDSls and delete ones that are referring to lists that have been deleted (I noticed a few just clicking around randomly). Of course, if the ID for the notorious blocklist is known that can be searched for directly:

https://pdsls.dev/at://did:plc:ilqzmwy64pr7iuiynrgdodax/app.bsky.graph.listblock

cc: @devinivy