Another related question is why it's not possible to move levels up and down in the levels setting. I started by creating the second floor first, and afterwards it was not easy to create a lower level. Apparently it's much easier to create an upper floor than a lower floor once you've started. I'm ...

Yes, this appears to be an issue with floor levels and floor thickness, tweaking these settings has resolved the issue. Thank you.

Hello,

I have searched in vain for an answer to this apparent bug.

In my two-floor simulation, choosing a floor on the upper level (for example, gray wood), overrides any ceiling choices on the lower level. That way, when looking up on the lower level, instead of a normal ceiling, you see the ...