Hey, I might've found a bug that involves docking:
I'm building a little station in mun's orbit. For that purpose I've built a Transfer-Vehicle with a docking port that can get a 20t payload to my station and then return to LKO.
so, I've launched said Transfer-Vehicle and my station part payload of 20 tons to LKO with 2 different launch profiles, did the rendezvous and docking. That's when the bug occurs: I am able to undock and redock the vehicle at this point, but whenever I do a vessel switch or a quicksave load (maybe even warping - I'm not sure on that), undocking isn't possible anymore.
Using Mythos' KML Persistence file editor, the problem becomes pretty obvious: Imgur Link
for some reason (I assume as the craft gets saved) one docking port gets saved as docked to the other port aswell as docked to the command module which is why undocking after loading becomes impossible.
For like 2 days now, I thought it had something to do with the docking ports I'm using (Rover Dude's Konstruction mod) or the fact that my 2nd part didn't have a command module. I've tried out both those hypotheses and they turned out not to be the problem.
I did cheat launch the same 2 vessels via alt+F12, and docked them again. Here saving reloading etc. works just fine and docking/undocking always is possible as the vessel data gets saved correctly (Imgur Link).
For now, I therefore believe that this bug could be related to this mod. Has anybody else tried launching parts that then dock and need to undock again? Maybe somebody can try to recreate that bug.