I saw that, too, but darned if I can find it now. I am in too many quilting groups, lol.
Here are some pics from Pinterest that may help. There are 2 @ this link, from GEDesigns, but no mention of a pattern. Click the arrow on the side of the photo to get to the other layout for the squares.
https://www.pinterest.com/pin/985231162219576/
Ugh. There was also one that was laid out more like the one from FB, and was in blue and green as well. But now I've lost the link!. If you look at the ones above, you'll see how blocks are made. It's the layout that was different, going diagonally from corner to corner.