Apparently we had an accident with recent update on 1.14.14 version which made it possible for moneybag event to select a random-sized area as well as allow the bag itself to spawn inside buildings. While I was searching myself, I noticed you were running around one particular building, so I thought it was weird. Later I've checked through admin menu where the bag was and it truned out it was located exactly inside of the building you were next to. Development team is already notified about it, so hopefully it'll be fixed quite soon.
I apologize for inconvenience I've caused. I'll give you cash worth of 2 moneybags to repay you (out of my own pocket for the sake of economy balance).
ACCEPTED.