Nice to hear it worked out for you.
Yeah I use both the Steam and Protontricks version from the Fedora repos, so no Flatpak. I wonder if the Steam flatpak works better together with Protontricks flatpak but good to see you were able to give it the additional access rights.
Actually I also had to rename the file name at one point. I added the hint now in the guide.
Also Protontricks GUI started to throw a couple of errors due to “unknown file arch” of the wine binaries but it still does start after clicking the errors away.



















Man I just love the browser and its features. But it does help that they are EU based and have some pretty well known browser veterans as founders. Also they are quite supportive in their forums and I feel they try to be as transparent as possible in their blog posts. E.g. they made clear to support Manifest V2 as long as it is somehow possible while also keep on improving their builtin ad blocker (but we all know nothing can keep up with uBlock)