Steam still will not run CachyOS's native Proton build, and the merged fix only logs an error

T2Covered by 1 source · first reported by UploadVR / Road to VR / MIXED at 19 Oct, 23:05 UTC

Steam's experimental container client will not launch a Proton build installed in /usr, and it refuses without writing a word to any log. The change that landed on October 16 fixes the silence rather than the launch: a pull request merged at 20:30 UTC that evening turns a quiet exit with status 0…