Batch Update in Proton Up QT not working in Ubuntu system version of Steam about protonup-qt HOT 1 CLOSED

So, you have both the native version and the Flatpak version of Steam installed, right?
It will show all installed Proton versions for both Steam versions respectively, but the Batch Update functionality for Proton only works with the Flatpak version? For the native versions it shows success, but doesn't actually apply the settings to Steam?

That's a bit strange, the implementation is the same for both versions. It could be a permission issue or there is an old config folder remaining from a previous installation, we had that issue before.

What is the content of the folder /home/username/.steam? Can you run those commands in a Terminl and tell what the output is:
ls -la /home/username/.steam
ls -la /home/username/.local/share/Steam

Also, can you run ProtonUp-Qt from the Terminal to show advanced output.
For the AppImage version, navigate to the containing folder an run ./ProtonUp-Qt-*-x86_64.AppImage
For the Flatpak version, type and run flatpak run net.davidotek.pupgui2

from protonup-qt.