What is wrong with the hatches on the Mk2 inline cockpit?

[weregamer]

The only mod I have installed that ought to be fiddling with this part is MechJeb Universal, which should only be adding the MechJeb Core function.

I remember hitting this problem several years ago when I last played KSP, but thought it would have been fixed long ago.

I have a cargo bay immediately behind the cockpit (I had hoped to use the visually-present hatch on the back to go EVA in the cargo bay, but it's not "real" the way the one on a Mk3 part is.) I can almost believe the opened cargo bay hatch could collide in some weird way with the location of a Kerbal coming out of the cockpit, but when it's closed it's exactly like any other Mk2 part...

I will try building a plane with a fuel tank behind the cockpit to see if that works, and report back...

For reference, my latest log is at https://drive.google.com/file/d/1rSsHA-YBVwSMZaMLhDekbi_odBWnFd_4/view?usp=sharing

 

OH! Some experimentation found me an answer. I think it's crazy, but it's an answer.

I had a tiny antenna (the surface-mount L1 one, rotated to run fore-and-aft) mounted on the top of the canopy - nowhere near the hatches, nowhere near where the Kerbal actually shows up on EVA. That was apparently the obstruction.