My bad, should have put this originally, tested in Firefox, Chrome and Edge on Windows 10.
Same behaviour across all.
Also tested in Safari on iOS (iPhone 12 mini) which has change since I last used a mobile (when creating Learning the Ropes of MX5OC Forum on Discourse)
Previous
Current
Notice how the top hamburger menu on the blue banner is now on the left with a black dot to the left of it (ignore the red box on the first image, take from an example on the linked post above)