Unfortunately leaving them logged in is not a good solution. When I was able to authenticate with SSH and pubkeys to open a connection to nomachine server I had hope, but then it asked me to logon at the DT. Once I’m in on the DT the USB mounts just fine, but the idea is that a user can export their yubikey to nomachine and then login with MFA. I do know this sort of works, when I’m logged into the DT and my yubikey is remotely mounted, I can lock the DT and log back in again with my PIN.
The ticket you provided doesn’t look like it’s to provide this feature, it looks like there may be a bug, which I haven’t encountered yet.
Regards
-Bob