**System Information**
Operating system: Windows 10
Graphics card: GTX 960
**Blender Version**
Broken: 2.83.5
Worked: 2.83
**Short description of error**
Merge By Distance, And crash
**Exact steps for others to reproduce the error**
1. open .blend file
2. merge by distance
3. crash
delete faces, dissolve faces, etc will also cause crashes.
{F8796705}