Anyone else losing their mansions when storing

I had a level 5 classic mansion disappear entirely for a while. I still had the REV value I had earned from it but REV was not increasing as I placed new items, so I knew something was wrong. It did not reappear in place or in my inventory when I restarted the game, but it DID return to inventory mysteriously after I stored then placed one of the other upgradables (I forget which one). It was very weird.