Chrome Version: 70.0.3538.102
OS: Linux

What steps will reproduce the problem?
(1) Go to https://www.mvg.de/kundenportal/profil/registrieren.html
(2) Focus the first password field, ask Chrome to generate a password (e.g., through the context menu)
(3) Accept the generated password

What is the expected result?
The password field and the one after it (confirmation) are filled with the generated password.

What happens instead?
The password field stays empty. Only the confirmation one is filled, but the site erases it as soon as the first field is focused.

Notes:
It would have been helpful, if the confirmation field would unmask the generated password, so that I could have force-typed it into the first field. I ended up using DevTools to retrieve the generated password.