May 2021
Same here. This is from November, but the bug is still in the game. Can anyone comment on whether this is being worked on?
August 2022
UP, it's sill the case after 2 years
December 2022
Hi!~ Idk if you have figured it out, but I had this issue myself. It caused the roof and issued with the above floor if it was lower floors. What you have to do is place the platform, then go to the story above it, there should be a yellow outline, like how the selectable stuff is, click that and you should get "Remove ceiling" and it wont remove the floor above, it will just remove the ceiling option for the platform. Hope this helps!!!