In Linux Mint 12, i never experienced it before, but today i discovered that :
maximizing yed window cause widget (like color choices) appear in wrong places, but the mouse must be clicked in the expected position.
If i click on the widget odd things happens, because I am not really clicking on it , but behind it. It seems like the draw offset is wrong and the logic position of the mouse is still right.
This makes yed unusable.