Editor crashes when moving a Dockable window

Hi All

trying to reposition dockable windows (not keeping the CTRL pressed and dragging them over one of the possible positions) the editor just crushes ( "metcal editor has stopped working ..." ).

Would just like to customise a little the editor layout as don't like the default.

Any idea, something to reset ? Had delete the profile in the past but the problem persists ...


Thanks in advance for any suggestion.