Staging while docked

When my ships are docked, staging on different ships does not work (I used multiple launches for each ship). I selected the the rould-like ship and pressed space, so then its interstage (with a docking port in front of the camera) should have depart. But instead, triggered a stage from a square-like ship, and I saw this. Moreover, the gyzmo does not change its "nose" orientation while toggling docked ships, and I want to choose it freely .Also, undocking is very chaotic and sometimes ship may start spinning at enormous speed after it or even explode.