This is definitely related to the new Human gtk theme, I tried it with many icon themes and all of them show the same glitches, but only with Human controls, it doesn't happen with Clearlooks or Glider for example.
This is definitely related to the new Human gtk theme, I tried it with many icon themes and all of them show the same glitches, but only with Human controls, it doesn't happen with Clearlooks or Glider for example.