How do I lock actors so that I can edit in VR Mode

I am trying to edit a level using VR mode and I would like to ensure that I cannot accidentally move any of the actors. I can lock them when using the normal viewport using actor contextual menu and then ‘lock actor’ in translation submenu.
Unfortunately though, when I enter VR Mode this lock ceases to work and I can move stuff about. When I return to normal editor actors will then be in their new accidental positions so they don’t even snap back.
Locking of actors is even more important in VR Mode than normal because mistakes are easier and undoing more difficult.