The current implementation of Split-Tunneling is good but I ran into a problem adding XBOX GamePass Games to it because the folder permissions does not allow Proton to open the .exe Files. I tried it by adding access rights for my user and for administrators but it still does not work.

My feature suggestion: Add a list of installed or currently running apps that we can easily select for split tunneling.
Or maybe a seperate Feature to add all XBOX App/GamePass Games to the exclusion