I know this is an aged thread - however...
tl;dr: Reset trim!
I’m playing on XBox, KSP Enhanced Edition, file v1.0.1.7, and ran into this issue. After finding this thread and not seeing any remediation, I decided to troubleshoot in my scenario to see if I could figure it out.
I’m running a mining rover on the Mun, and noticed that the option to return to Space Center disappeared while I was out mining. I brought the rig back to the launch platform to recover it, and realized that option was also gone from the altimeter menu. But I also noticed that my trim had been messed up while I was out mining (pink arrows in your yaw/roll/pitch indicators). I reset the trim (LB + LS for XBox), and BOOM! Menu restored and I was able to recover the rig.
I hope someone finds this useful!
