Firefox for iOS has a better Liquid Glass implementation than Safari and has converted me (I’ve never used any other iOS browser before!), but there is one thing that would make it perfect. It’s a small thing, but I think fixing it would be the cherry on top.
The Liquid Glass elements currently have a white border around them on all four sides, and so these are visible around the edges of the display. These elements would look cleaner if they seamlessly blended the Liquid Glass effect in from the edges in from the edges of the display without the white border.