to anyone looking for somewhere other than Lemmy I'd like to suggest mbin. I'll admit it's not perfect (especially on mobile, interstellar is decent but it's the only app and has some bugs) but it handles reddit-style content pretty much the same as Lemmy except for the lack of read-marking on posts. as a bonus, it handles microblogs so you can see those without an account on mastodon or something similar.
the main one I'm still having repeatably right now is that sometimes when I go to post something, especially a comment, the button does not seem to work, so I press it again thinking I missed and it gets posted twice.
I also sometimes have an issue where up/downvoting makes a thing pop up saying "null check operator used on null value". it also happened when trying to unfollow a community from an instance I had recently blocked.