PNG palettes not loading right

I was testing out the pixel editor and I loaded in the Apollo palette. I realized it looked kinda off
So I tested around with 1x,8x, and 32x pngs, it seems like only the 1x works properly

seems like it's adding multiple of the same color?

unverified.

submitted by wonton here: https://lospec.canny.io/bug-reports/p/png-palettes-not-loading-right