@leocg in microsoft edge there is a functionality that shows a miniature of the viewport by hovering the tab, which is right under the tab and as wide as the tab. for example in a 15" display previewed tabs are shown around the size of 3x2cm
@burnout426 yes, but option to turn it off is more preferable.
*Another one upcoming feature is #address-bar-dropdown-cities, which shows unnecessary info if search phrase contains letters of cities in the world. The feature also can't be turned off (apart from disabling the flag, which will be removed soon, I guess.)