I'll address traits Jenny does not display first, then the jumping and door bolting questions.
Jenny loves the water; she lives with a lab and her first lake intro was in the dead of summer and the water was warm. That being said, this winter, late march when things were thawing, Jenny stood in 6-8 inches of thawing lake (meaning she was standing on ICE covered with water) straining on her leash to get to the geese out further in the ice water. She stood there for a couple of minutes until she was nearly convulsing with the shivers.
She is a chewer (less so now and anytime she's tired) and often rude at the door (rushing to go out) but has learned that Nothing In Life Is Free (Google that phrase for more detailed explaination - also one link out of many http://www.dogbreedinfo.com/nothingfree.htm) and she has learned great patience and SOME self control because of it. She has to at least sit for everthing - food, outside, inside (when it's cold, she does her business and bolts to the door and sits so fast it is comical), chew toy, meet the dog (the dog above that is bonkers in it's own neighborhood most likely is bonkers to meet the other dogs), meet the child, chase the squirrel - get the picture? NOTHING in life is free. Basenjis are smart and as long as you maintain some self control and are calm but firm, you will see progress. Jenny will actually wait in the other room in her kennel while I prepare her food, AND as long as I remind her "wait" she will let me set it down and wait until I say "Take it". For the first 9 months we had her, I thought that type of obedience would be impossible due to her "basenjiness", but about 2 months ago she started to develop some self control. NILIF - Nothing In Life Is Free.