This is more of a fix than a feature, but I find that sometimes when I'm in my inbox, I can't get back to my home screen. It's inconsistent but it happens a lot, and I usually have to open a comment reply, then go to the thread, then the community, and then I can use the home button again.

It's something that happened with Sync for Reddit too, so it's not a new issue. I can't seem to work out a pattern of circumstances though, it just seems to happen randomly.