Latest save erasing after saving room

What device/platform are you having the problem on?

PC

Were you alone or with other players?

Alone

How often does the issue occur?

Consistent

Room Name

Custom Room, CampVenture

Subroom Name

Challenge-Corner

Description

Rooms V1
No experimental mode enabled.
I’m just trying to move spawn locations in my sub room. Every time I save the room-- and it doesn’t matter if you switch rooms, or navigate to another sub room of the map-- It does not keep the latest save of the room.