My wife tells me her account is still behaving this way. Mine isn't. This app needs a lot of work.
Other oddball thing happening is when I get an e-mail from her, my name is appearing in the from in uppercase!
I'm having the same problem right now but with the web based email client. I am deleting emails and when the next sync occurs, they are right back in my inbox. I've also been having connection issues with the Comcast server but my network is fine. Very frustrating. You pay a lot of money for their services and this is what you get out of it.
I'm seeing this too. Web and App. Posted over there a detailed explanation of the problem.
Things won't delete compltely either. I see a line thru items in the trash I think I have deleted as if they are in limbo.
I feel bad for people who use this for their business e-mail.