It’s my first paladin so I do not know if this is also a problem on the main servers.
Shield rush does not stop unless you hit something substantial, and can take you a very long distance. Smaller mobs are not enough, it must be a larger mob or a wall.
Using another skill does not interrupt the rush. In one case I was stuck in a never ending rush and retreat (bounce back) and the only way to stop it was to log out.
This seems to have resolved itself, at least for me. It doesn’t work with a 2 hand staff, but is that working as intended - i.e. no shield, no shield rush? I had issues with 2 targeted skills that were not working at all, smite and lunge, but according to chat the devs are aware of them. They also resolved for me when I logged out and back in.
I will try to attach the logs from a play session completing the demo with 2 friends where lunge and smite were not working, plus after logging when things worked (except the 2-handed shield rush).