Comment 1 for bug 1500529

Hello,

Yes, it's true that these repaints could be optimised but repaints have already been minimised and having this feature could introduce new bugs, a more complex code (harder to maintain) and most of the time, the dock has to be resized (when adding/removing icons, moving the mouse inside the dock, producing effects over more than one icon, etc.) and all the window has to be repainted. Note that it shouldn't take too much resources, specially when using hardware acceleration.

But if you (or someone else) have an idea to improve the situation without introducing side effects, feel free to propose it here :-)