@Managor Thank you for the clean report! Very easy to reproduce :)
Edit: It turns out that this behavior is happening because Rock of Ages won't launch with a win10 prefix. The default prefix changed to win10 with Proton 5.0-3.
Tracking note: The regression label has been dropped because the older Proton versions are also affected if the wine prefix is set to win10.
Alright, confirming that it has been fixed.
proton 5.0-3x1 2020-02
Compatibility Report
System Information
I confirm:
steam-22230.log
Symptoms
Game first time installation has regressed. The game does not launch the first time on 5.0 but can be worked around by switching to 4.11, launching once and then switching to 5.0
Reproduction