Is there any specific thing that makes it ugly? I'm curious because I don't see the ugliness.
Since I use Firefox 99% of the time, I just opened Chrome and Edge to check out their address bars. All three are extremely similar. In Chrome and Edge the borders are more rounded, while Firefox opts for a more square look. All three feature a "popup" effect that makes the bar slightly bigger when interacting with it: in Firefox this effect activates when clicking the bar, while the other two enlarge when inputting data.
Since I use Firefox 99% of the time, I just opened Chrome and Edge to check out their address bars. All three are extremely similar. In Chrome and Edge the borders are more rounded, while Firefox opts for a more square look. All three feature a "popup" effect that makes the bar slightly bigger when interacting with it: in Firefox this effect activates when clicking the bar, while the other two enlarge when inputting data.