jails Chrome inside a Linux jail stops working after xlock'ing the screen

[Holger]

I run Google Chrome inside a Linux jail according to here:
https://forums.freebsd.org/threads/running-google-chrome-in-a-dedicated-linux-jail.85491

Everything works fine. However, once I have locked the screen with xlock from x11/lockmore, Google Chrome would not start anymore. This really puzzles me.

Any ideas?