[FR] Corrupted Lots/Houses disappear in saves with lots of rental units

Today I had my second experience with neighbouring lots reverting to default lots.

1. The first time it happened was when For Rent came out and I placed my first residential rental - when i went back to manage worlds it suddenly showed as 0 simoleons worth, so i went back in and all disapeared. I didn't save that day and never touched residential rentals anymore, and deleted the one that came with  Tomarang as well, after first removing all assigned rooms and any people owning it. I never had the issue again.
2. Today I placed multiple lots from gallery into multiple worlds, just to try out some lots, and I hadn't saved for hours. I only moved from lot to lot, placed from gallery, placed some other alternatives, and moved to the next. When in Cuidad enamorada, in the neighbourhood where the penthouses are, i placed some alternatives for the gym on the ground lots (only community lots, including lots that were offering me to change lot types) and then moved over to the nightclub venue, and that's when all 3 lots around the nightclub reverted back to default. I was so shocked that I didn't dare to save and restarted and luckily it was working again, but now I'm not sure if it will happen again. I wonder if it is a memory issue, of keeping all my lot changes in memory without saving for quite a while? I'm guessing this, because my usual play style is just placing 1 lot at a time, then switching to live mode, testing the lot and only then saving, and moving to the next lot afterwards. So todays long test session was different than usual. I also am playing in a big rotational save where all lots are placed from galllery, no empty lots in this save, and i just bought Adventure Awaits and was placing everything there freshly as well. I regularly check Willow Creek if lots are reverting, out of fear it may start happening to me, given that my save is a "forever-save" since 2020 and my save files are 170 MB big (even though I regularly clean out households and photos). It looks like this issue can even happen without residential rentals, so wanted to share that insight here.