My bug list
I to have had similar issues. Scrolling through my email and BAM back to the start screen. Reading an email, BAM back to the start screen. Sometimes nothing showed up in my inbox. Other times I had a list of emails with (unknown sender) and (no subject) for every email. I went into settings and also had issues where my Microsoft account would just hang at syncing. I have my Microsoft/hotmail account, Exchange account (Work), and my personal email account which is me.com. But for me it isn't isolated to email. I've had Skype crash, Photos, and countless other apps.
Then I also started to get weird problems with txting. I would start a text, tap send, and nothing. It would just sit there. And the persons name at the top whom I was sending the txt to had disappeared. Tap the back button, try again, same result. After several tries and different method of txting someone, it finally worked. Now I'm worried if i'm receiving txts and they aren't getting to my phone. Also in the messaging app under 'online' it said "set up a Microsoft account to chat on Messenger and Facebook". Um hello, I have a Microsoft and Facebook account setup.
I'm also curious if anyone has had a sporadic cell signal bar? Mine seems to jump around on the lock screen. Even when I'm standing in the same spot and not moving around. On my old iPhone 4 I never had the signal bar go up and down that much.
I've tried restarting the phone but that only seems to fix things temporarily. So looks like I will be trying a restore. This has been a very exciting and frustrating journey so far. I really hope Microsoft is working on some updates.