never had an issue with buildings... just the black square lights.... couatl update dose not help either... maybe some setting on fsx .cfg?
Don't mix the two things, they are *entirely* unrelated. The randomly missing building is a problem that happened to F-OHPM, which is likely a problem with his settings, and he finally reported it happens in OTHER (non-FSDT sceneries) too.
The black squares around the lights in P3D WAS a problem with the scenery, that has been fixed (as you can see from other messages) with the latest Live Update.
Note that, it's best if you Uninstall and Reinstall CYVR. No need to do anything else, the latest update will be downloaded automatically while reinstalling.