It’s apparmor. Add this to /etc/apparmor.d/local/usr.bin.thunderbird :
/usr/lib/purebrowser/purebrowser mixr,
Then “sudo apparmor_parser -r /etc/apparmor.d/usr.bin.thunderbird”
You’ll need to do something similar for Newsboat.
It’s apparmor. Add this to /etc/apparmor.d/local/usr.bin.thunderbird :
/usr/lib/purebrowser/purebrowser mixr,
Then “sudo apparmor_parser -r /etc/apparmor.d/usr.bin.thunderbird”
You’ll need to do something similar for Newsboat.