[krishicks]

If I understand you correctly, Safari does this on both iOS and macOS.

If you click a link that opens a new tab and swipe back from that new tab, Safari closes the new tab and shows you the previous tab.

I’m not exactly sure of the behavior when you open a new tab, then go to another tab, then back to the tab that was opened and then swipe back, though.

[pkamb]

Safari for iOS has kind of a "grace period" where the back gestures do work from the new tab. But I think this is more to aid the confusion for people who don't understand that a new tab has even been created.

If you switch tabs, or close the app, or do anything other than somewhat immediately go back, that back history is lost. And if you do use the shortcut to go back, the new tab is destroyed. There's no ability to open a bunch of tabs and then in each of them independently navigate back to the parent.