Reproduction steps:
1. Create a new Unity project.
2. Switch to a default layout (Window > Layouts > Default).
3. Hover your mouse cursor to any Editor window.
4. Click Shift + Space on your keyboard.

Actual behavior:
- Crash with an empty stack trace.
- Final Editor log line shows "Parent process was terminated" message.

Reproduced with:
2018.3.0a8

Not reproducible with:
2018.3.0a7

Tested with:
macOS 10.13