Namely, Joe-the-user can't see the hamburger menu at the top and looks for more tools where they are supposed to be: after the first few tools. So the UX guys at Google put an affordance there for him [0].
I've seen this quite a few times, especially for interactions where the search box is within the hamburger-driven overlay. Some sites/systems add a dummy, redundant search box on the main UI that just opens the hamburger menu and focuses on the newly-displayed search box.
Namely, Joe-the-user can't see the hamburger menu at the top and looks for more tools where they are supposed to be: after the first few tools. So the UX guys at Google put an affordance there for him [0].
I've seen this quite a few times, especially for interactions where the search box is within the hamburger-driven overlay. Some sites/systems add a dummy, redundant search box on the main UI that just opens the hamburger menu and focuses on the newly-displayed search box.
[0] https://en.wikipedia.org/wiki/Affordance