The Windows Photo Viewer buttons in Windows 8.1 seem to flicker/glass stops working for a second when hovering over them. This happens only when using a theme in Windowblinds 8.01. I think the buttons have a problem with transparency or something.
When I exclude the title bar from being themed it goes away, but how can I fix this and have it themed?

In this photo you can see the center button was being hovered over by my cursor. The glass background disappears in a square shape.
Kind of bummed out as I just bought WB today and it has problems already...