The Surface Go work fantastically, but I still run into a lot of UX/UI issues deeply entrenched into the Windows way of doing things.
I think the most succinct example is setting management - particularly with bluetooth. Windows has this slide out with quick access to important setting like Wifi, Bluetooth, etc. Similar to Android's setting center.
Long pressing the Bluetooth icons opens a secondary menu (basically treats it like a right click) with a singular option to take you to Bluetooth settings. On Android, a long press takes you directly to the Bluetooth settings because they know that's what you're looking to do.
That's not a deal breaker, but it's certainly a clear example of how MS still hasn't stepped up it's UI game.
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On the flip side, I'm finding all sorts of stupid issues with my Mac lately. It seems like every new OS upgrade brings a slew of new problems.