Read Emails Becoming Unread After Xfinity Signal Check

  Every now and then I go into the Xfinity screen on my tv, go to 'tools', then cursor down to 'Comcast Labs', then select "Check Signal Strength".  Now remember, this on my television.  Sometime later I'll check my laptop and do a random check of my email inbox (through Comcast).  For the last 4-6 weeks, whenever I do that signal strength check (once a week maybe), my email inbox takes the last 3 or 4 dozen emails that I've already read, and were marked as 'read', and changes the status to "unread".

  These two events are the only things I will have done with Comcast/Xfinity in that time, no other logging into Xfinity.com, no phone calls, no account changes, no nothing.  

  Is checking the signal strength somehow accessing my Comcast/Xfinity account and doing a reset of my email at the same time it's doing the video signal check?  This is not a life or death situation but it sure is annoying to see instead of 2 or 3 unread emails that I now have 40 or 50 unread emails.  I have to go through each one and check whether I need/want to keep it, then either delete or 'mark as read' - yes, it's even brought back emails that were previously deleted.