Bug#969717: libgl1-mesa-dri: Champions of Regnum display deteriorates after libgl1-mesa-dri upgrade to 20.1.7-1

["VB" <victor.boyau@disroot.org>]

Package:libgl1-mesa-dri
Version: 20.1.7-1
Severity: important

Dear Maintainer,

Occasionally the native linux 64-bit client of the mmorpg Champions of Regnum becomes unuseable with a messed-up display (no/transparent walls, invisible characters, grey backgrounds...) after a libgl1-mesa-dri upgrade.

Currently, the last working release is 20.0.7-1 and I have to revert and downgrade to it as soon as I try a more recent release.

Downgrading only the following 5 packages solves the problem entirely.

aptitude:
[DOWNGRADE] libegl-mesa0:amd64 20.1.7-1 -> 20.0.7-1
[DOWNGRADE] libgbm1:amd64 20.1.7-1 -> 20.0.7-1
[DOWNGRADE] libgl1-mesa-dri:amd64 20.1.7-1 -> 20.0.7-1
[DOWNGRADE] libglapi-mesa:amd64 20.1.7-1 -> 20.0.7-1
[DOWNGRADE] libglx-mesa0:amd64 20.1.7-1 -> 20.0.7-1

Best regards,
VB