Hello @Frambooisier, this feature request is already being tracked at #6085. Closing as a duplicate.
What about issue number 1, ticking the box instantly applying the preselected option causing redownload without giving option to change before apply.
Nothing extracted yet.
Hello,
I would like to request a feature that I wished be there long time ago
The game>>properties>>Compatibility>>"Force the use of specific Steam Play compatibility tool" check box often causes the whole game to be re-downloaded because it immediately takes effect depending on what it will default to from the compatibility list. For example Windows/proton version is installed on USB storage, trying to change the proton version may select Linux native right after the checkbox selection, then whole game is marked as redownload.
It would be great to have two versions of the same game installed and switch between them(proton and Linux native). For example, Company of heroes 2 is not cross-platform between Windows and Mac/Linux, I wish to be able to play on both from time to time. Renaming directories is cumbersome.