Yes white ticking comes with Robicano, but this horse doesn't have rabicano. You can tell his ticking is from Sabino because of how his blaze looks like its bleeding out into the brown fur.
He also doesn't have the white tuft on top of his tail like rabicano does. And his ticking seems to be on his rump, and not his barrel where rabicano ticking is located. I stand by my statement that his ticking is from sabino.