When I draw a new ROI the "active window" becomes the ROI list so for instance the arrows are navigating in the spreadsheet instead of the imviewer window. Probably because of the same reason I can not switch between selection tools (e.g. O -> A) unless I click first to a neutral part of the GUI eg the edge.
There are probably other examples when the mouse tool does not do what it should first unless selecting another tool or clicking somewhere, maybe the same underlying issue?
Description from issue #11