Disappearing Stars.

So I just upgraded my character to 6 stars. I briefly closed the window to check on something else then came back to the stars window to look at the stats for one of my heroes and the main hero is down to 4 stars and the ones i used to upgrade him are gone as well. I know it upgraded because I was discussing it with my guildies and had also just upgraded a hero to 7 stars.

Same thing happened to our VH except she got 9 stars, went to check a minute later and was downgraded to 7 stars. I recommend taking screen shot when upgrading stars ; )