To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Rated 5 out of 5 stars
The missing blue arrows may benothing for you to concern yourself with.
I reverted back to build v184.108.40.20690429 and the blue arrows came back.
But then I switched to the default theme and they vanished again? Maybe it's something that's malfunctioned with my FF install/profile? :S