BUG: Docking Two Ships causes them to move together even though I am not controlling one

[TwinKerbal]

I cannot dock two ships together because they move when I control one. They move at the same time, from the same inputs.

Edited September 14, 2016 by TwinKerbal

[ExplorerKlatt]

Please read the how to get support sticky

 

[Claw]

This is a stock bug caused by one of the ships having trim input. What happens is that when you control one vessel, the SAS becomes "unlocked" from all vessels in range. So if a vessel has trim input, the SAS disables and the ship begins to spin.

The fix for this currently is to cycle to the target vessel, press MOD+X (ALT+X for windows) to zero out the trim. Then go back to the vessel you want to control and complete the docking.

This issue should be sorted out in 1.2.