Iceweasel + NoScript: Google search results href anomaly

[Safwat <softwatt@gmx.com>]

I am running NoScript + Iceweasel, and I observed something weird.
Consider a Google search result which has this "a href" value:

https://www.google.com/url?q=https://en.wikipedia.org/wiki/Hello_(Adele_song)&sa=U&ved=0CCsQFjAIahUKEwjPuq3H34vJAhWDWhQKHW7eCbA&usg=AFQjCNHJRKExeuRwwdFmAKkJ6dH7qv_TeQ

When I hover my mouse over it, the value instantly changes to
https://en.wikipedia.org/wiki/Hello_%28Adele_song%29

This should be impossible with NoScript, nothing should be able to
modify the DOM. Google is not white-listed.

What's going on?