Half of my project gone when keeping it few days idle

Getting Started
1

Hello, so my issue is pretty much described in the heading.

I miss my gameobjects in Hiearchy, Prefabs, Animations, VFX in Project and whole Tilemap is gone too. I learned from that to back up often but still want to know what the heck causes it.

Thanks for any ideas

2

i’ve seen unity crashing very often, if you leave it open for a long time (in the background for a whole day, or if computer goes to sleep etc).

editor.log might contain some information, although if you start unity again it gets replaced (and only 1 previous copy is kept)

in the projects Temp/ folder there is also backup of current scene, but that gets erased when you start unity again,
so would need to copy that into Assets/ after crash, before starting Unity again.

3

If all those files are actually missing, I’d be suspicious of file system corruption.