2 Past Accounts Cannot be Removed From Onedrive Pull Down Menu even Under New Android Emulator

As you can tell from the following screen capture.

The account with a key on the right of the pull down menu, is the past account cannot be removed.

This is a fresh new Android emulator, no Samsung account, no other setting, fresh new.

I open 2 ticket to Microsoft OneDrive team, one replied it has nothing to do with Microsoft 365, wants me to contact mobile phone team, the other team escalated the situation to development team but no reply ever since.

It seems a cloud problem, not related to phone, how can i get Microsoft Cloud team to solve the problem?