Re: Second Floor Flooring Turned Invisible
You could try building a ceiling on the downstairs room:
Select the downstairs room
Click the "next level up" button in the top right corner of the screen
Click the yellow highlight around the top of the selected room
"Build ceiling" should come up.
If it says "Remove ceiling," then click that and then "Build ceiling" should be available.
Sometimes the game gets confused with rooms of different sizes and shapes upstairs and downstairs from each other and a ceiling has to be rebuilt.
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