We're having this same issue as well— it sounds like it may share a root cause with a similar issue that has been reported on SFSafariViewController (same behavior, same versions) https://forums.developer.apple.com/forums/thread/764468
I agree with others that this is a big issue
BeauDav
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
St. Louis, MO