Ok I took interest and want to help you so I got into this, downloaded thunder and did some testing and my conclusion is that your issue is related to the lemmy/fediverse post/comment language settings. The hoodie post is the latest post on BIFL that is not tagged as english post.

Ill elaborate in a sec once I can reproduce your issue on thunder.

Edit 1: in the following screenshot from BIFL from the lemmy web UI you can see that the hoodie post is the only one with “undetermined” language setting:

The posts you don’t see are set explicitly to “english”. By default posts should be “undetermined” but communities/instances can change defaults.

I can’t fully remember the confusing logic of these content language settings, but ill report back once I play around with thunder for a sec.

Edit 2: I can now confirm that I was able to reproduce your issue and that it is indeed what thunder calls “Discussion language”.

Go to your account settings in thunder > Discussion language > make sure you have “undetermined” and also “english”. You should add other languages which you want to see.

I know. I hate how this works as well, but that has always been an annoying part of lemmy and fediverse :( you are probably not seeing any posts / comments that have a language set. Most of lemmy content is either undetermined or english though, so adding english should fix it for you.

Hope this works out!