Can you install Pixel launcher since Oreo on the 6P seeing as the Google Now launcher hasn't been updated in a long time.As far as I can tell, no I cannot.
It's strange. I'm running stock Android and the Google Now launcher (which is the stock launcher for my device). It was only when I updated to Oreo today that my app icons got the square treatment.
It's only happened to YouTube, the Play Store, thr Google app, and Chrome.
Maybe it's just an Oreo thing.