WP8 Mail Tile Unread Count Dissapearing

Since this is my first WP, I'm not sure of this is expected behavior or not:

I have my gmail accounts (activesync exchange) linked together. I get the alerts just fine, number of emails and an email "preview" shows up for the most recent email, but if I go in to the mail box to see what all the emails are, and then go back to my start screen (without touching an email), I loose both the email preview (not a big deal at all to me...) and I loose the new/unread count on the tile.