Deleting a user is broken

"Basically go to Active users for a licensed user with a mailbox, and then un the user flyout select Delete user. Then on the next page with options, you get an option to "Give another user access to (user you are deleting) mailbox. You get a guided experience which would allow you to essentially "move" the mailbox ownership to another account." This part works, the user that you nominate gets access to the shared mailbox, however the would-be deleted user doens't get moved to "Deleted Users", which is not the expected behaviour. What this also means is you can't use the "restore user" action to undo it all. It also means that you can go through the "Delete User" function infinite times, which can't be correct! "I do not think it is right though that it would do it in a way that would result in no account; yes, the account is disabled for logon and the mailbox is 'delegated' to another person by giving them full rights. But the user account is still needed, and if deleted, that mailbox would "go away"." Yes, I agree with this, and I believe that's why the "Deleted User" section exists; it keeps the user and "anchors" the mailbox (if I'm using that term correctly), then after it has been in that state for 30 days, they are fully deleted, including the shared mailbox. I'm not sure if I got this across clearly before, but if I delete a user and do not convert their mailbox, they go directly to the "Deleted Users" section to be removed in 30 days. This is how it used to work for ALL users, converted mailbox or not. This is why it's so frustrating because it used to work but is now broken for some reason.