August 2024 update broke my game again !!!

kayren85  Did your save revert to its previous state, or is the save otherwise normal but just missing the lot you built?  What lot type did you use?

It's certainly not unheard-of for mods to cause this kind of problem, although it's also not common.  Still, it might be easier to build with no mods or custom content initially, then add just the cc you want for the build, and keep your mods elsewhere until and unless you're going to play in live mode.