This history of user agent strings still cracks me up. https://webaim.org/blog/user-agent-string-history/

> Chrome doesn't.

For ages when visiting YouTube it wasn't possible to mute the YouTube tab - the mute button was disabled and it was the only website where I've seen such behaviour; just checked, and it's now entirely gone. Compare it to Safari, where option to mute the tab is available (for Youtube)