Database password not updating correctly when enabling Virtual Server

I've noticed that when I disable a Virtual Server then re-enable it, the database connection always fails (for that particular Virtual Server).

The password seems to be the same in the mysql.user table (the authentication_string does not change) but the user will not be able to connect to the database until he/she changes the password.

The weird part is, going to "Virtualmin -> Edit databases -> Passwords -> Custom password" and setting the password as it was before does not help. You first need to put a different password and then input the same one as it was before (double update) in order for it to work.

Anyone else suffers from this issue?