so I was reading [this thread](https://lemmygrad.ml/post/27839), and I noticed I could read the comment by @email@example.com , while I knew they had deleted the comment. on the other hand, the comment by @Travis Skaalgrad was displayed as deleted, which I knew was incorrect. so I checked a few more times, and I realized when you sort the comments by old or new, you can see it, but when you sort by top, hot or chat, you can't.
well, I thought it might be a bug in federation, but then when I was on the front page, in a thread of lemmy.ml I saw two deleted comments and the user had stated that they have deleted them, but when I sorted by old, I could read one of them.
so I thought maybe recently deleted comments are stored for moderation purposes, but then I found [this old thread](https://lemmy.ml/post/69064), and I could see the comment deleted by @firstname.lastname@example.org when I sorted by old.
I think there are two bugs, one that makes some deleted comments remain on the servers, and another one that displays some of them when sorted by old or new, while displaying some comments that are not deleted as deleted.
I was using Lemmy's android client Lemmur, which I had downloaded from F-Droid. post a comment if you can reproduce the bug.