Much like the title says and much like the post here except it's a different clamp-o-tron model.
After achieving stable Low Mun Orbit and manning the lander can I would normally just undock and proceed with landing. But the Clamp-O-Tron fails to react completely to the given command! Much like the Apollo missions, when achieving LKO after launch I would decouple from the lander, set the can's clamp-o-tron as target and dock. Obviously this wasn't an issue, and I didn't bothered testing undocking because why would I? This shouldn't happen. Even worse, the button disappears!
The images illustrate the problem.
I tested decoupling with the space station I have around LKO and they work fine, no issues there.
The issue never happened during 1.1.2
Link to output_log: https://mega.nz/#!ZdVSiY6R!wD_wMvvTFx9Y3zQLxkpyUOEXb32pOS6mjFAnwZIngD8
An interesting line read the following:
(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebugBindings.gen.cpp Line: 64)
SCREENSHOT!!
I'm still very unfamiliar with the log though, so I'll leave it to someone more knowledgeable.
Please note that I play with mods installed, but when issues like this occur I always test both ways to see if the problem persist. In this case I submit, the problem was persistent with both modded and unmodded installs.
EDIT: The vessel consists of only KSP vanilla parts.
Thanks in advance for any help that you may provide!