Resizing with upper and left-side borders causes bouncines in glx mode

[JulNadeauCA]

In GLX mode, moving+resizing a window using left-side or upper borders causes bounciness. This does not happen with a simple resize.

[JulNadeauCA]

The behavior seems to be different for different graphics drivers. nVidia drivers on my test system does simple resize without visual artifacts. Under ATI graphics, the bounciness is the same for simple resize as it is for move+resize.