### System information

SolveSpace version: (e.g. 3.0~3dd2fc00; go to Help → About...)

Operating system: (e.g. Debian testing)

### Expected behavior

What should have happened?

### Actual behavior

What actually happened?

### Additional information

For bugs, please attach a savefile that shows the problematic behavior.
You can attach `.slvs` files by archiving them into a `.zip` first.
