I mostly don't mind (like 99% of redesign these days, it is pointless), but the new one makes many things harder to read:
- I don't know which menu or tab is selected (the tiny border is not obvious enough)
- The buttons don't have a state anymore, so figuring out if I am following this repository or not is difficult
- The file browser does not have a clear separation (border) for each file, nor does it have alternating background colors. That makes the navigation harder.
- I am disappointed to see that the redesign did not get rid of the useless in-page loader when I click on a link. This is annoying and breaks my normal navigation.