User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0 Build ID: 20171028220326 Steps to reproduce: I am on Arch Linux using the AUR package firefox-always-nightly. I make sure that everything is updated. In Firefox I activated auto scroll in the settings and then pressed MMB on a scrollable page. Actual results: The actual functionality of the auto scroll feature works fine but the icon that appears seems to be of a low quality. I attached a picture of it. Expected results: I posted my issue on Reddit and I was informed that the icon has been changed and should look differently from the one I am getting.