I could NOT re-create the issue described in this bug report.
--
On returning to Marco (Adaptive Compositor) issues could be re-created (though not always; some took 2-3 moves (screen position relative to one another) before issue appeared, then it repeated)..
As I'm typing this, the horrific-flashing screen on the screens to my left (the QA-test box) has stopped flashing & re-drawn perfectly..
(of note: the dc7700 & hp 8200 share screens with one positioned above the other; not the more conventional left-right setup)
On switch (MATE-Tweaks) from
WM: Marco (Adaptive compositor)
to
WM: Marco (No compositor)
I could NOT re-create the issue described in this bug report.
--
On returning to Marco (Adaptive Compositor) issues could be re-created (though not always; some took 2-3 moves (screen position relative to one another) before issue appeared, then it repeated)..
As I'm typing this, the horrific-flashing screen on the screens to my left (the QA-test box) has stopped flashing & re-drawn perfectly..
(of note: the dc7700 & hp 8200 share screens with one positioned above the other; not the more conventional left-right setup)