I noticed that if I set to not hide posts in communities, this setting is ignored and posts are still hidden.
Also the default sorting keeps sometimes reverting, and after some time they even revert instantly after going away from the menu, basically disabling the functionality altogether.
If I set to show read posts in lemmy ui, then my home feed does not load at at all, if I toggle hide read posts on home feed. Settings seems to be reverted after quitting the app.