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.

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TeMPOraL 9 hours ago | parent [-]

> full screen modals

Thanks. I never imagined this is a thing, it's an useful addition to my mental model of software components, to explain why back button on web behaves in weird ways for some apps.

But it sure does sound like a dumb pattern on the web.

	▲	notpushkin 8 hours ago \| parent [-]
		While we’re making sure that modals are recorded in history so that you can close them with the back button on mobile (e.g. https://svelte.dev/docs/kit/shallow-routing), MSFT can’t be bothered. But when it comes to abusing the very same history API to grab the user’s attention for a bit longer...