Has the new Outlook web interface cocked up the rendering of one's avatar in Office 365. Or is this just coincidence. When I load the company SharePoint home page, my avatar appears briefly:

But after a second, it disappears and displays my initials:

It never appears in the new Outlook web - always just "HC".
Hmm, could be a fault elsewhere as on the SharePoint home page where it appears and then disappears, there is a new green tick on there and on clicking my icon, it doesn't show my avatar.
I know 100% that I have not changed my avatar for years (as it's the company logo) but I've only spotted it's disappearing since trying the new Outlook web app...
Later... this problem only occurs in Edge. It's fine in Chrome. Except you don't get the option to try the new Outlook in Chrome. I assume that is by design, i.e. the button is only displayed when you're running Edge??