Kerbal Space Program

When using open ended fairings, decouplers in some configurations refuse to decouple until the fairing is deployed.
When in space and time warping, vehicles will separate and appear to be two vehicles. However, when time warp stops, the vehicle explodes violently.

It seems like the game only "half" decouples, refusing control over the decoupled part and switching the PAW to just "aim camera" but physics still treat it as the same vehicle - except time warp, resulting in destruction.

Video 1: Illustrating multiple configurations with varying results:
https://www.youtube.com/watch?v=La8jMpTTnUY
0:07 Decouple ok
0:14 Decouple not ok. Fairing deploys, decoupler effective
0:24 Decoupler turned the other way. Same problem
0:35 Fuel tank instead of ore tank. Same problem
0:46 Fairing tractor works
0:54 Fairing tractor works only when fairing deployed
1:01 Fairing tractor does not work. Fairing deploys, decoupler effective

Video 2: Illustrates "timewarp after decoupling" problem
https://www.youtube.com/watch?v=Zq4mWCVJXA8

Two craft attached:

fairing-decoupler-test: a variety of fairing/decoupler tests to illustrate the problem (see video 1)
Duna Sample Return Ascent Rocket: An SLS replica using open ended fairings as interstage (see video 2)