There is a new toggle in Hide Floors that uses the old method of part heights determining what is hidden. This keeps parts hiding in the right order when half snapped foundations are mixed in. It isn't perfect and I wouldn't recommend building on a hill and using it.
Hide Floors by default uses an additive system for saving levels when parts are added. Anything placed on a wall gets the walls level + 1 or .5 for half walls, this was needed for building on different terrain heights. All foundations start at the same level so half snapped can mess things up.
- added an option to invert the current selection
- bug fix for walls placed to next to roofs not being triangulated
- fixed sinking camera in interior mode
- fixed ceiling light not being place-able
Learn about the new info spots and see what changed in the recent large update:
https://steamcommunity.com/gid/103582791455462516/announcements/detail/1700562627601733261