I was re sizing my tixati window from about a three quarters screen size to full screen, and the tab for all my downloads blanked out, as well as nothing showing under categories.  The downloads were still going, I was prompted to start torrents, but nothing showed on the screen.  Only the Icons and tabs at the top of the screen showed, but no categories, or torrents.
I had first pulled the top left corner up to the top of my screen, and then decided to use the maximize button. Once I hit that everything went away.  I had to restart tixati to fix this.
Just thought I'd post this to see if anyone else has seen this happen