So my playbook likes to randomly mark opened emails as unread. There is no rhyme or reason. Sometimes I go days without this problem, and often it does it everyday.
For example, I open my emails and read them. They are all marked open. I put down my playbook. Five minutes later when I pick it up it has marked all those emails as unopened again. It will do this five times in a row!
Very maddening lol. And yes its been restarted several times.