Deleting database deletes assigned user even if user is assigned to another database

After deleting a couple of databases, two other sites on the same project lost connection to their databases.

Since I create one database user per project, sharing it across databases, I went to the mysql database on the server and found that this user was deleted from the users table, probably when I deleted the first database.

Ploi is unaware of the user deletion and still tells me that the user exists, not allowing me to create a new one with the same name with the message that user already exists.