Unity quits unexpectedly after selecting Start (Editor Mode) in Standalone App menu

Steps to reproduce:

1. Create a new Unity project
2. Go to the "Standalone App" menu item
3. Select "Start (Editor Mode)"
4. Observe the result

Actual results: Unity quit unexpectedly. Bug Reporter opens

Expected results: Unity should not quit

Reproducible with versions: 6000.5.0a5

Not reproducible with versions: 6000.5.0a4

Tested on (OS): macOS - Tahoe 26.2, Windows 11