Can't ESC after node editing

I'm a 30 yr user of AutoCAD and now using Draftsight on the Mac, aniMAc running Snow Lepord OS.

I'm finding that if I activate nodes for anyreason, I can not use the ESC to exit the "node edit mode". What happens is, once I select a node the cammand window becomes inactive so hitting the escape does nothing. If I click back in the command window, making it active again, THEN hit the esc key it works BUT it shouldn't work that way. Is this a bug or is there some way for me to fix this