My character froze in place, wasn't blocked by anything but wouldn't move at all.
Teleported to town, sold some stuff, stashed some stuff.
Stash window unresponsive and unable to close.
Went back to original location, character still unable to move, managed to teleport out of that situation.
Stash still on screen and no command to reload the user interface that I could find.

Had to log out, back to main screen losing all the progression in between checkpoints.
This would be something I could live with, if it happened only once, but this was the fifth time today for the stash to just remain on screen.
First time that my character froze in place though.