Search function doesn't work on some subreddits

[garrthes]

Today I noticed that the search function (three dots upper right corner - Search) doesn't work anymore on some subreddits.

For example it works just fine in /r/all or in /r/newpipe but on subreddits like /r/documentaries or /r/redreader it just shows "No search results found." when searching for any term.

There seems to be no rhyme or reason as to which subreddits are affected. Searching inside comments seems fine.

RedReader version 1.24.1 (F-Droid)
Android version 12

Some other people seem to have the same problem and also with searching inside the comment sections: https://www.reddit.com/r/RedReader/comments/1j1wa73/search_is_not_working_for_me_also_a_question/