I believe people have mentioned before that the posts are really hard to unhide so once its hidden thats it. So if you comment then it counts as interacted and then its gone. It may have been changed in updates though but ive been scared to try.
The keyboard is whats buggy for me as well, no specific app as it seems to be all of them at seemingly random times. Most other things have been pretty stable for me. Carplay i use waze so i didnt notice the maps issue.
The app has been amazing so far. I also love the posts and transparency about it! Thanks for working on it for us and making it easier for us to get into this world.