@miragy69 at keepassxreboot/keepassxc#7317 (comment):

Summary

Keeppassxc can't detect any hardware key after get in the jail. Hardware serial number is detectable. (Edited) Please reassign the label if needed.

Temporary solution

The issue can be solved by commented out these applications under /usr/lib/firejail/firecfg.config. Then # firecfg --clean && firecfg for recreate links again for commenting out the keepassxc-proxy can solve the issue #6230, i.e. you don't have to manually click reload on browser plugin for password autoloading.

Looking for future support on firejail

It will make safer for running keepassxc in the firejail, if the above issue can be solved. Many thanks.

Possible solutions:

1. Add a comment (Put 'ignore nou2f' and 'ignore private-dev' in your keepassxc.local).
2. Remove nou2f and a a comment for private-dev (If you need to plugin devices while kpxc is running add ...)
3. Remove both, nou2f and private-dev.

I'm not sure which one is the best, but I think we should fix this for 0.9.68.

Originally posted by @rusty-snake in #4770 (comment)