cubase 11.0.30 pro, mac osX
Tested with music XML in piano format (2-staves).
Create music xml for piano 21 bars long.
Choose File>Import>MusicXML and select .xml file. Select destination location and press open. Cubase crashes, leaving a ‘Cubase quit unexpectedly’ apple system dialog.
Remove 1 bar from the test xml file and try again. Success.