Heya, I have been following along with Ship Manifest and Connected Living Spaces fixes and changes over the last few days and am now able to transfer my crew correctly (not yet tried inflatable habitats yet though as I am playing the game and testing as I progress).
v0.23.5.3.2.3 appears to have a problem when a craft changes focus which cause the craft selections become unclickable.

To reproduce:
1: Dock a craft to an existing one and then access Ship Manifest
2: Rendezvous two craft within craft switching range and switch to the other craft (and back again)

To work around:
Exit and re-select your craft from the Tracking Station.

Keep up the good work :)

OK, well now I can't seem to reproduce it...
Perhaps something was saved in my current game and righted itself after another restart?
Anyways... I will keep my eyes open and re-open if I spot it again.