Popping out a tab doesn't turn it into a draggable window, but just into cursor basic cursor held object. This gives no visual feedback on what is actually happening and makes the whole operation much less visually clear

It's a small thing, but in the times I tried Firefox, I noticed a lot of these rough edges to the point that it became frustrating to use. I'm using this specific one as a benchmark for when I'm willing to give it a shot again