Since I upgraded to MacOS Sierra my volumes are not displaying the correct size anymore. At first I thought my external Time Machine HD had a problem now it's also happening on internal SSD and my internal HDD. To show you what I mean I made a screenshot before I moved a 153GB folder and after. Bare in mind I already emptied the Tray so it should show me the freed up space. Instead it's telling me it's exactly the same size as it was before deleting 153 GB from the drive. Anyone else experiencing this problem? If so, how to fix it. btw, I'm on the official release, not the beta.