yeah.. this is a common problem. To solve you can mount them and use unstuck (esc - unstuck etc). OR just quit to main menu and launch the game again. Annoying but at least it is easy to fix
#Bringing Mounts Down from Space Station have them stuck and unable to move
formal niche
lethal lion
Known issue that if you wanted to report should be done in the correct place. This channel is by the community to help the community. #bug-reports is to report to the devs or hit escape in game and report there.