Command Manager docking problem

I'm using the latest Bentley Connect edition of Map and my "Command Manager" box keeps detaching from the side dock and maximising to the full screen.  Every time I try to minimise it to dock, it resizes itself to full size. 

  from this (full screen), to this     Docks itself to the bottom of the window

I've tried multiple times to resize, re-dock and it keeps doing it.

Any assistance would help thanks.