IIRC the Azure “portal” does this. Also likes to not record things as navigation events that really feel like they should be. Hitting back on that thing is like hitting the back button on Android, it’s the “I feel lucky” button. Anything could happen.
Having used Azure I believe that this is the result of pure, distilled incompetence rather than malicious intent.
I think that is because some "pages" are really full screen modals. So the back button does take you back to the previous page, but it looks like you went back two pages (closes modal + goes back). I don't spend too much time in the Azure portal but this behavior is rampant in the Entra admin center.