Okay, this is an issue I had before where the open and active scene would be blank when reopened - and it has happened again. Thanks to a sudden loss of power, everything in the currently selected scene was wiped. It’s just blanked. Backups saved it - thankfully - though it took me a long time to find the file. However, this is incredibly worrying as a bug - the only way it could be worse is if it blanked multiple files. I could maybe have something to do with the save feature and power loss occurring at the same time as I habitually press ctrl+s a lot - though I don’t know if this software uses that shortcut.
By the way, have you considered a backup restore feature? Or a way to view documents by scene name when browsing the folder?