I dunno, maybe this is just me. It looks like some colors got “Inserted” before the blacks/greys and pushed things off the right column, making some wrap to be “under” the left side. Pretty sure these used to be lined up better.
Also, there could stand to be a few more near-black greys. Some of the default backgrounds (in dark mode) aren’t in this picker and have to be typed in manually.
Windows 10 desktop app.