SKDownload.progress stalls at 0.8 but still completes

I'm having a problem where an IAP hosted by Apple doesn't show progress beyond 0.8 - the percentage goes up gradually with calls to paymentQueue:(SKPaymentQueue *)queue updatedDownloads until then and then stops, and then after some more time the completion is sent. I saw this on stack overflow but nobody ever completely solved this:

http://stackoverflow.com/questions/28681456/storekit-skdownload-progress-does-not-complete

Is this normal? If we know it will always stop at 0.8 we can display a different message there or just let it sit at 0.8, though that is somewhat confusing to the user.


Thanks

SKDownload.progress stalls at 0.8 but still completes
 
 
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