Browse Later per H.Yang

If you want open url without remove it, middle-click it, or right click and open link in new tab, or drag it to any position on tabbar you want.

Due to Firefox limitation, If you are looking for a more beautiful icon works with both Dark/Light theme, follow steps below:

1. Type about:config in the addressbar, and press Enter.
2. Click the "I accept the risk!" button.
3. Type svg in the searchbar on top of the page, and press Enter.
4. Find preference name "svg.context-properties.content.enabled", double click it, the status will become "modified" and value become "true".

That's it, the icon will looks like built ins.