I’m getting unreliable response with key object in Max 5:
– open the key object help file
– slowly repeatedly tap space bar, watch max window print "You hit the space bar" for each tap
– clear max window
– press and hold down trackpad mouse button inside the window
– slowly repeatedly tap space bar, usually at least the third tap will not give a response
This is new in Max 5, and quite badly ruins any interface using mouse with keys.