[OSX] Holding CMD+' , ' while creating/opening project crashes editor

To reproduce:
1. Open launcher window
2. Create a new project or open any existing one
3. Hold CMD + ' , ' while compiling scripts or importing assets when creating/opening project

Expected vs actual: editor should not crash (usually editor crashes silently)

Reproduced: 2018.1.0b1, 2018.1.0b3, 2018.1.0b4, 2018.2.0a1
Not reproducible: 2017.1.3f1, 2017.2.1p2, 2017.3.0p2, 2018.1.0a7

Note: if we press CMD+' , ' when 'Opening Project in Non-Matching Editor Installation' window is opened, Fatal error message is thrown.