You will need to install a user script manager extension to install this script.
Ultra simple script to fix the weird behaviour of Bing Search to go back to the top of the page when tab or window isn't active.
I found a function in a script file triggered when the tab is going out of focus, then waiting for 15 secs (the default value of AwayTimeThreshold) and finally scroll the page to the top.
I don't know why, but it's annoying. ;)