In one of my apps, I'm noticing a couple of my buttons have text that are blurry on El Capitan but are not blurry on Yosemite.
I've logged out the frames. It seems that on El Capitan the button frames are not aligned on the pixel grid. It is a strange though that the same code on Yosemite does not result in a blurry button. Did the system automatically fix this issue on Yosemite?