Hi,
I am using a UR5e, sw-verison 5.10 both on a simulator and a real robot.
When commenting out a screwdriving node and then commenting it back in using the button shown i the picture a new until node is created.
The new until node is an until success node and can therefore not be deleted.
This occurs both with my own impementation of a screwdriver aswell as the standard screwdriving installation.