I have fixed the share permissions after filling a bug report with the SMB4K maintainers and Firefox works with the changed permissions.
I am still curious if not being able to open files owned by root in a user's home directory is expected behavior for snap applications. The exact permissions were: -rwxr-xr-x 1 root root 2301 Apr 29 09:09 about.html* I can open the file with a non-snap app such as Kate. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2064676 Title: Firefox snap cannot open files in Samba share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/2064676/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs