I entered this rift from the one in the ruined era, and now my character is completely frozen.
I can still press escape to go to main menu but all other keys are not able to be pressed.
I also cannot go back through the rift.
Edit: I was able to recreate this by clicking on the rift as soon as I went into the new area. It seems that when the new rift is in its animation stage, clicking on it locks the character up.