This is an interesting admission by the team at Google.  Though they have not confirmed the number of affected enterprise customers, I know it least one local organization that was contacted by Google concerning this unintentional data leak.  Fortunately, that organization had ceased using the service some time ago.

It does appear that Google has remediated the problem.  That said, any potentially affected organization should address password reuse and other related opportunities to mitigate the risk.

https://nakedsecurity.sophos.com/2019/05/23/google-stored-some-passwords-in-plain-text-for-14-years/