I have encountered a strange bug on the new UI. I have three pages favourited: Request List, Co-Workers, & Assets. When I use Alt 2 to go to Co-workers, it seems to modify the URL to show as /oui-coworkers-new/. This doesn't happen when I click on it from either its usual place on the menu, or when I click directly from the Favourites menu. It also doesn't happen with either of the others. Re-ordering the favourites produces the same result, following Co-workers, not the second link. I've removed the favourite and re-added it, re-started the browser, etc, with no change.
Edge version is Version 122.0.2365.52, in case this is useful.