Hi! I believe after the collision layer change, underground extension pipes no longer need space scaffolding under them to place. Was this intentional?

Probably yes, because you should be using those without ground, for example: underwater on planets.

I need to verify I cannot place them in space. It should not be possible. I’m still trying to make it work so that you can’t build them in empty space but can still walk over them. Space explorations collision layers are quite complex. (Players can walk into space)

Okie dokie! Hopefully a change in the future that adds scaffolding/platform requirements under them again doesn't mess up any of the pipes that have already been placed floating in space.