Hi zoom2,
Thanks for the code snippet. I have passed this info to our engineering team to further investigate and we will improve this in future releases.
For the current solution, you may go to the source of the Ionic SDK in your project, navigate to src/ios/Zoom.m, and comment out the line 120 to 125(https://github.com/zoom/zoom-sdk-ionic/blob/master/src/ios/Zoom.m#L120), and build your project again. This should fix this issue.
Hope this helps. Thanks!