FWIW, I did basically the same process on 19.04 and it didn't crash.
I also didn't boot because the installer fails to recognize the encrypted root and doesn't even appear to attempt making a crypttab.
FWIW, I did basically the same process on 19.04 and it didn't crash.
I also didn't boot because the installer fails to recognize the encrypted root and doesn't even appear to attempt making a crypttab.