I have a space station and an attached lander in jool orbit with a service bay with eva chairs in it as a command module. however, I cannot get kerbals in them because the option to board the chair doesn't appear even when the kerbal in question is right next to the chair. I then proceeded to test the SAME lander in another game, and it worked just fine. I tried using different kerbals, detaching it from the station, making its probe core or the chair itself control the entire station before detaching, Nothing works.
EDIT: here is an imgur link to an image of my kerbal next to the chair with the menu open, but with no option to board it https://imgur.com/a/pCpspbL