[1.4.0] Kerbal unresponsive after engaging RCS

[aarondl]

I had a craft that was a lander docked to a bunch of boosters controlled by a probe.
Craft had just entered Duna's sphere of influence, and I was gathering science, needed to EVA to reset some science experiments because the right click "Reset" wasn't working (maybe because of bugged MK2 Command Pod?)
There was a mix of Kerbals of all types + tourists on the vessel.
I eva'd Bob Kerman, and let go of the MK2 Lander Can (4 Kerbal version), he starts floating away, I engage RCS, and he locks up.
No keyboard input would work at all for him anymore.
Switching back to the craft allowed me to move the craft around.
I tried saving and reloading, that also didn't work.
I then pulled Valentina out of a separate module, and she also had the exact same issue after turning on RCS.
Rest of the game seemed fine.

I can post a save if required. I have the bugged one still.

Thanks!