Outlook.com prompts to Enter a new folder name, when I click on "Move to", then "Move to a different folder"

I have always been accustomed to clicking on the Move To button, then unless the folder I want to move to appears on the history list of the last 8 or so folder names, I click on Move to a different folder.

This has STOPPED working. When I click on Move to a different folder, the cursor moves to a blank field associated with the Create a new folder option just above Move to a different folder, and prompts me to "Enter new folder name". I definitely made sure I did not select Create a new folder; I selected Move to a different folder. This cursor movement to this other field and corresponding prompt to Enter new folder name is an error. I first noticed this maybe about a week ago.

When I click on Move to a different folder, it should and it used to pop up with a list of all of my folders, to scroll down the list and choose the folder to move to.

The problem happens on either Microsoft Edge or Google Chrome, when logged in to my paid hotmail.com account aka Outlook.com account. This is not relevant but I have used the account for more than 20 years. The problem also occurs whether I have an email open, i.e. am reading it, and make the selection to Move to a different folder, or if I am looking at the list of emails in my Inbox, and tick the box next to an email, then from the menu I select Move to, then Move to a different folder. In both cases and on either browser, the cursor moves to the field for Create a new folder just above Move to a different folder, and prompts me to Enter new folder name. It behaves as if I clicked on Create a new folder which that option is just above the Move to a different folder menu selection. But clearly I did not choose Create a new folder.

This happens on every PC I use both at home and at work, Chrome or Edge, Windows 10 Pro or Windows 11 Pro. I could only choose Outlook from the list of Products. This is not Outlook email client included with MS Office. This is outlook.live.com web based email.

Something is quite obviously broken. Thanks in advance for any help.