Update, 4:36pm: Microsoft has updated its post to indicate that the "ground up" redesign coming for the Mac version of Outlook will continue to be a "native Mac app," and not a "Progressive Web App ...

I use Outlook for Mac for my work emails, and if I switch it to 'new' Outlook (menu option) then I find the Dock icon's unread badge is very hit and miss. As in, half the time a new email comes in ...