I ran into a problem with my view navigation plugin.
It uses MMB-press (and mouse up/down) to change flight altitude. All works well and smooth (overriding Rhino’s MMB via lowlevelmousehook) in most cases, but as soon as Render or GroundPlane panels are visible, the movement stutters a lot. Note that no other mouse or key movements are affected, only when MMB is down. Is there anything in these two panels that may affect this behavior?