Stalker clear sky (20510) screen resolution 1366x768 disappeared, also, order of resolutions became random.
Hello @XakepSDK, we'll be using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/1166#issuecomment-418204276.
Stalker clear sky (20510) screen resolution 1366x768 disappeared, also, order of resolutions became random.