Google is testing a "return to top" button at the bottom of the Explore section in the search results. Previously, you had to manually scroll to the top, but now you can just jump to the top with the click of a button.
This was spotted by Khushal Bherwani who posted this screenshot on Twitter:
Here is another variation:
I see the 'back to top' button when I first hit explore, but not at the end of the serp. And the button jumps me back up to the SGE results, basically the top of the full serp. pic.twitter.com/nzSBeRtygZ
— Glenn Gabe (@glenngabe) July 27, 2023
Forum discussion at Twitter.