The upcoming patch will address several issues with painting walls and trim as well as adding new assets. Only the selected side of a wall will paint instead of the whole wall. All trim will be independently paintable instead of all trim being painted.
As a heads up for everyone, this update will invalidate previous saves for the creative maps and players will need to reset them. This is necessary as many of the house parts have been replaced.
The update should be ready the week of the 6th.
Thanks from Argon Gaming!