Maybe use a stirring stick to help mix it. It will help get the stuff settled to the bottom. I had this happen to one of the WG Paint Sealant 3.0 samples I had. It just wouldn't mix up right by shaking it. Used a stirring stick and was able to loosen up the stuff on bottom and it mixed fine...
Looks like polish residue still there maby.. I know with the Wolfgang Finishing glaze its easy to remove but you often have to wipe it several times to remove all the residue.. i.e. flip the towel to the other side once or twice and it goes away.