Overwatch 2 works perfectly on Proton experimental
Overwatch® 2 on Steam
On Bottles with the default runner I always had the mouse focus glitch. On Steam Proton Experimental it works great! If you play on BNet, I suggest you switch to Steam.
Overwatch is one of the easiest games to run on Linux, even before OW2. If I'm not mistaken Devs also had a positive attitude towards Wine/Proton, where they stated they will not be barring Linux players (looking at you, Bungie)
Overwatch was one of the first DX11 games running well on WineD3D back around 2016-2017 or so. Maybe it was just because of how popular it was at the time, but I remember it being a big deal that it was working. Before that point wine was really only used for DX9 games and below. This was even before DXVK came along in 2018.
Yes they falsely banned Linux players two times in the span of 7 years and reverted both ban waves. It took them a few days to automatically unban me and the support wasn't helpful, but that's to be expected in a ban wave.
They've actively fixed bugs plagueing their games running on wine for decades iirc.
But some bugs like the mouse bug are really annoying.