[Bug] Crash when trying to delete a vertical constraint

[marthinwurer]

Running freecad-daily:

OS: Pop!_OS 20.04 LTS (pop:GNOME/pop)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.
Build type: Release
Branch: unknown
Hash: 6cac6d937bb9d1dd1e92580052f19ed4672b8c63
Python version: 3.8.5
Qt version: 5.12.8
Coin version: 4.0.0
OCC version: 7.3.0
Locale: English/United States (en_US)

I have no save file due to the crash.
While editing a sketch, I tried to delete a vertical constraint and FreeCAD crashed. It just closed to desktop. I was running it through the start menu so I don't have any logs. Just posting for awareness.

[chrisb]

To be better prepared next time you can configure in Preferences->>General->Document to create autosave files every couple of minutes.