Gmail on Chrome on Lollipop (unread in bold messages are fine):
Gmail on Chrome on Nougat (unread in bold messages looks thin):
As you can see in the second image, the unread message is thinner than the first image. It's probably on bold too, just not as bold as the first image.
Anyone knows how to fix this on Nougat?
Update: This appears to be due to the default font used by Chrome on Nougat. Any ideas how to change that? Changing the Android system fonts didn't affect Chrome.