The recent IPad ios update is truly obnoxious. I like to sort tabs as I go, but Safari has decided that you shouldn’t be able to do that at the ends of the tab bar because it instead tries to create a new window when you try to move one of those tabs.
The new open windows by dragging feature is utter useless garbage. I’ve had windows accidentally open and then lost all my tabs trying to merge them, the organise by site feature is inane, and in general safari has been made worse by their inclusion in the update. The people who developed it should feel bad about themselves and their work.