Lose Mouse click after Strongbox opening

The game stops recognizing left mouse click after activating a strong box. The said strong box was supposed to freeze on activation. But it didn't. Upon activation, no freezing took place. But the game refused to recognize mouse clicks. In addition, all skill activations were unresponsiveness, including those bound to keyboard presses. The game ran normally, but aside from WASD movement, which the game recognized, I couldn't do anything else. I couldn't even open portal. Logging off and then back on returned the game to playable.