Steps to reproduce:
1. In Wayland session, Launch any SDL game such as OpenArena or Urban Terror
2. Adjust gamma settings
Gamma levels change like in xorg 1.9 (or < 220.127.116.11) session, Relaunch game
Gamma levels do not change leaving all games too dark to play
The xorg-server version of this bug was fixed in Bug 27222 with
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