BUG #15528: Make 'Esc-to-cancel' more robust.
Making Esc to cancel selection more robust. This now works even when the active view is changed, or the render view widget has the focus.
Fixes BUG #15528
Making Esc to cancel selection more robust. This now works even when the active view is changed, or the render view widget has the focus.
Fixes BUG #15528