Visited links are turning color to purple in my firefox, which is default color, I did not change those color settings, and usually this behavior works but sometime on some links in google search result # Clicked link turning color # Checking the page and clicking back button # visited link color is still blue, should have been purple I tried to open same search result in another tab but still no purple color for visited link. probably google adding some parameter to visited link which is making firefox algorithm to not to understand is this link visited or not. you can see behaviour at https://youtu.be/2xAc4yf3uJY or https://imgur.com/1kydG7m or https://imgur.com/7g8aivL My firefox version is 92.0.1, in windows 10