Yes indeed. I've been experiencing this for a minute now and it's got me concerned. Also, I've got a few devices still running 11.3 that need to be updated and Workspace One is not getting the job done. When trying to bulk-update, I may get 2 to 5 devices out of 200 to actually perform the update. IpadOS will be launched soon and I know my organization will want to upgrade. I can't believe that there are two people (you and I) on the planet that experiencing this issue...?
We've got 700+ devices deployed.