Symfony version(s) affected: 4.2.2

Description
In Firefox, when route name is too long, it's invisible on the debug toolbar. Screenshots from Chrome and from Firefox below. I did also additional check without any extra stylesheets, with the same effect.

How to reproduce
Go to page with long route name. I used user.my_account_settings on my screenshot.

Possible Solution
Remove text-overflow: ellipsis; from .sf-toolbar-block .sf-toolbar-icon in toolbar.css.twig.

Additional context