Wrong focus after docking landed craft

[djr5899]

Hello,

I am currently facing an issue where docking two landed craft cause multiple problems when attempting to undock.  In the scenario in question, I have a smaller craft (the one on the right in the screenshot) that is a manned craft with 2 Kerbals.  This craft landed on Duna, was low on fuel, and didn't have enough fuel to reach orbit.

To resolve this, I built an unmanned craft to come and transfer some fuel to the manned craft.  The unmanned craft had a very simple robot arm with a docking port, 2 hinges, and a hydraulic extension arm.  In the screenshot below, you can see me just about to connect the arm docking port to the manned craft docking port.

I am able to dock the 2 craft, and transfer fuel to the manned craft as intended, however, at this point, things go haywire in several ways when I attempt to undock and send my manned craft into orbit.  What happens?

1. An NRE is thrown whenever I click on Undock from the robot arm docking port.
2. As part of the NRE, it looks like the arm gets separated from the original craft.  The hinge attached to the craft is just hanging in mid-air, and the hinge attached to the docking port is attached, however it no longer moves the docking port.  The hinge just moves itself up and down, not the docking port.
3. Worst of all, the 2 ships do not appear to be properly separated back into 2 separate craft.  When I undock and try and take off with the manned craft, the camera focus stays on the ground with the part of the ship that still remains on the ground.

I have been able to catch the manned portion of the craft and change the camera focus, but, even worse...the craft still acts as if both craft are together...meaning, that I am still technically carrying the mass of both ships in flight, and I don't have enough delta-V to get into orbit due to the added weight that isn't actually there.

Anyone ever seen anything similar happen?  Did some searching but didn't come across anything.