Have you tried to reset workspace? Another option is to drag left side panel to the right side, when blue line appears on the right side of screen release mouse button to attach panel to the right side, it seems that panels are detached.
Have you tried to reset workspace? Another option is to drag left side panel to the right side, when blue line appears on the right side of screen release mouse button to attach panel to the right side, it seems that panels are detached.