[Merge] ~3v1n0/ubuntu/+source/mutter:ubuntu/bionic into ~ubuntu-desktop/ubuntu/+source/mutter:ubuntu/bionic

[Daniel van Vugt]

Also, the fix is not in disco or cosmic(?)
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https://code.launchpad.net/~3v1n0/ubuntu/+source/mutter/+git/mutter/+merge/361811
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