I have been in the Training area, Malatina Corse of terror and survival course. In all 3 mini games I became stuck to the floor in one place, unable to move, interact or cast skills.
On entering Malatina I completed round one but kept the key for the end and entered round 2, second marker in the position froze. Sent stuck report, got removed out of the instance by it as normal.
Survival course, unable to move by WASD or two mouse button press, visual stuttered and returned me to previous position, only way to move was click on the floor.