Drag and drop from inbox to folder broken

Windows 11. New problem. Unable to drag and drop a message from inbox to folder. When I try the destination folder does not hilight as I move the mouse over the list. So I thought I’d try to use the right click and move to folder but the choose folder dialog does not show all folders - some are missing from the list. Help.
1 hour later:- Weirdly it has started working again.