Since the hack on lemmy.world and a few others, the admins have killed sessions that were logged in. If you are experiencing any weirdness, try logging out of the app and then back in. Fixed the issues I was having this morning. Shout-out to Jerboa development channel on Matrix for the fix.
Oh, that explains why lemmy.world was being weird today and yesterday. Thought it was just issues with my account. Thanks for the info!