I'm wondering if this is a bug. I would have thought that setting the default action of a left drag in the MIDI editor ruler to "no action" would mean that left dragging the mouse in the MIDI editor ruler area would then do nothing instead of continuing to set a time selection.
Am I misunderstanding the meaning of that option or is there some other way to disable the drawing of a time selection while the mouse cursor is in the ruler area of the MIDI editor?
I've tested this with a clean install of v5.961/x64