Edge DEV Version 111.0.1660.9 (Official build) dev (64-bit) Tab notifications

Recently took the latest DEV version of Edge (111.0.1660.9).

Noticed that on Outlook.com (corporate version going thru 365) when new email has arrived at Inbox, the tab is no longer giving the 'Red Dot' notification.

This was working in the previous version of Edge DEV.

Had a co-work check and this is still working without issue in Chrome browser (just as a comparison).

Thanks