I'm currently on firefox developer edition 140.0b6 and I noticed that dragging tabs all the way to the right wil move the tab back to the previous position unless it's moved until it touches the "Open a new tab" icon. I feel like this change makes it clunky and I have to be slower when moving my tabs. Sometimes if I go too fast the tab will become a new window or I end up bookmarking it in the toolbar instead of it moving to the right.
