I had a job ticket out on this issue, and they're not going to fix it. They have decided that this is a feature and not a bug, so you're out of luck. Once again, a bug has been fixed by redefining as a feature. The quality of service of Powerapps is terrible. I'm disgusted. See below:
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Hi Mike,
As per the update received from our Product team. This actually is not a bug, it is currently by design and this is determined by the PDF viewer and not the container.
The PDF viewer control is only allowed at the root of screens/components today. We used to have a copy/paste bug that allowed users to side-step many rules but that has been fixed. So you can no longer copy/paste the pdf viewer into a container.
I am waiting for further updates. Please let me know if you need any more details.
Best Regards,
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