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Ubuntu 17.10 (artful) reached end-of-life on July 19, 2018.
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Seems to have gone away with recent upgrades. I can't tell exactly which
as I was attempting to use wayland under amd and even under nvidia-387
(which worked fine except for a couple of random system freezes during
closing windows). Back on nvidia/xorg because of that (although not
exhaustively
Attaching second screenshot referred to in original post...
** Attachment added: "Screenshot from 2017-10-02 11-04-16.png"
https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1720760/+attachment/4960369/+files/Screenshot%20from%202017-10-02%2011-04-16.png
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