The one I’m using is becoming so buggy to the point of being unusable. It was never really great tbh, what are most people using?
It would probably help if you mentioned which app you are having issues with and what device you are using. I recently stopped using Jerboa because of login issues and started using Voyager. I find it's less of a smooth experience but some of the other bugs I had with Jerboa like back spacing removing the space before the previous word aren't present.
As an added question, are bookmarks associated with the lemmy account or the app?
Saved posts are linked with your account. If you login to your account in a web browser you should be able to find it under your profile followed by the saved section.
Interesting, I've been using jerboa since the great migration,and while it has had its moments, it's overall been a smooth and enjoyable ride. Early on I had an issue like you're describing with the sort types, but not in many versions. 0.0.55 is the latest play store version. Might be worth clearing data and cache and re-logging in if you are already on latest