I confirm that I've this bug with Metacity 2.30 too.
Fabounet has given more details:
> to be more specific, I think the problem comes from the use of the
> gdk_move_resize function, which resizes and moves the window at the same
> time.
> it just calls XMoveResize, and then the WM get the X message and do its job
> (here, it probably does it in 2 times instead of 1).
I confirm that I've this bug with Metacity 2.30 too.
Fabounet has given more details:
> to be more specific, I think the problem comes from the use of the
> gdk_move_resize function, which resizes and moves the window at the same
> time.
> it just calls XMoveResize, and then the WM get the X message and do its job
> (here, it probably does it in 2 times instead of 1).