Dark Mode: Default to system not working on ubuntu

Hi - I like the new dark theme - I’m sure it will only get even more awesome when feedback is taken into account.

One issue I stumbled into is the ‘default to system’ setting - works fine for me on Mac but when I am using my ubuntu 20.04 laptop github doesnt seem to detect I have turned on dark mode in Ubuntu.

Work-around of course for now is to enable dark mode in github all the time :wink:

thanks again