When I go to a window that is not one of the drawing panes, and then go back to that drawing pane, the first click often leaves an inadvertent brush or pencil stroke. I think that the panes that you use to draw on should just return focus on the first touch, instead of using whatever tool is currently selected.
Happy Tuesday.
–Will
Hi Will,
This has been addressed in the upcoming patch of Toon Boom Studio to be released by the end of the month.
Best regards,
Ugo