[Bug]: bwrap: Can't mkdir parents for /usr/lib/x86_64-linux-gnu/GL: Read-only file system

[hferreiro]

Checklist

• [X] I agree to follow the Code of Conduct that this project adheres to.
• [X] I have searched the issue tracker for a bug that matches the one I want to file, without success.
• [X] If this is an issue with a particular app, I have tried filing it in the appropriate issue tracker for the app (e.g. under https://github.com/flathub/) and determined that it is an issue with Flatpak itself.
• [X] This issue is not a report of a security vulnerability (see here if you need to report a security issue).

Flatpak version

1.12.7

What Linux distribution are you using?

Fedora Silverblue

Linux distribution version

36

What architecture are you using?

x86_64

How to reproduce

I had problems with locales in a flatpak app and run the suggested command at https://github.com/flatpak/flatpak/issues/3712:

$ flatpak update --subpath=en,gl

Expected Behavior

Flatpak apps keep working.

Actual Behavior

Now, every app fails to run like this:

$ flatpak run org.gnome.Calculator 
bwrap: Can't mkdir parents for /usr/lib/x86_64-linux-gnu/GL: Read-only file system

Additional Information

No response