It is in terms of UI customization, beneath it's still Blink. I'm using it since Firefox destroyed my profile on the day they rolled Quantum - I'm most of the t

It is in terms of UI customization, beneath it's still Blink. I'm using it since Firefox destroyed my profile on the day they rolled Quantum - I'm most of the time satisfied but there were periods when UI was broken (tray for extension icons for example).