Today, after being logged on for awhile and inactive(~ 1 hour), I will try to click on the checkbox next to several emails to try to delete them.  The checkbox will not activate however.  I click on another folder and come back to the Inbox and the checkboxes work. 

 

Also, I tried to reply to emails and after preparing the email, the send button doesn't work. Going to another folder and then coming back does not fix this behavior.

 

Thanks,

Nate