Slingshot Latency Compensation creates Blobs that make the appsize grow steadily. revokeObjectURL doesn't seem to work on them

Question

EDIT:

So I found out where the real problem is. It seems like the real problem is the creation of blobs through the latency compensation oft Slingshot. Because when I outcomment the latency compensation the filesize doesn't grow

this.uploader.url(true);

..creates a Blob URL. I tried all kinds of "revoceObjectURL" on that url after they are used:

    window.URL.revokeObjectURL(blobURL);
    window.URL.revokeObjectURL(blobURL);
    window.webkitURL.revokeObjectURL(blobURL);
    window.webkitURL.revokeObjectURL(blobURL);
    URL.revokeObjectURL(blobURL);
    URL.revokeObjectURL(blobURL);
    webkitURL.revokeObjectURL(blobURL);
    webkitURL.revokeObjectURL(blobURL);

I'm calling each method 2 times to see if it was successful because I suspect a network error I neither get the network error, nor does the Filesize shrink to it's initial value.