I just wanted to bring up that when I click preview post and then return to edit my post everything saves except for the tags.
What exactly are you referring to when you say “tags”?
Also, you shouldn’t have to return to anything to edit when you preview. If you scroll down, you can continue to edit right there.
Ah, I was seeing a different layout than everyone else. Using a different browser fix it. It has something to do with cache.