Its a bug with uiScale. Try using SetCVar("uiScale", num) to adjust the scale by 0.001 a few times while the textures are being displayed and it will eventually fix itself when the scale changes. I get this all the time with textures being displayed in tooltips causing the line to wrap and take up 2 lines instead of 1.
Aye, I was playing abit with the Scale Value of the FuBar Tooltip and when I set it to anything but 100% it displays everything fine. So I'm doing a check and forcing it to bump the scale by .01% if it is set at 100%.
Odd behavior if you ask me.