I emailed a PDF file that when I open in in Outlook for iOS it is in the proper orientation. If I share it to Adobe Reader on the same iOS device (iPhone 6 / 9.3.2) it is rotated 90 degrees. I see where rotation is not a standard feature, but this is an unintentional rotation.
Hi campdenhouse ,
Could you please tell if this is happening with a single file or with all of them?
Try to restart the device and then check if the issue is still there.