The only alternative I've found is to turn round the bug/problem by using the "Token" way to connect Azure Notification Hub to APNS.
- In your Azure Portal > Notification Hub > Apple (APNS), click "Token" under "Authentication Mode"
- Fill the form as below (IDs and Token written here are not real data)
If you are not familiar with retrieving those kind of information following the first part of this documentation could help. It is very simple to transpose instructions to your Azure Notification Hub.
Hope it helps.