My company has a Xamarin.Forms app that we've maintained for a few years. Basically, the root page of the application is a list of items that a user can view, but if they aren't logged in a modal page will come up for them to log in, which cannot be navigated away from.
Since installing the latest version of Xamarin (looks like Xamarin.iOS is at 10.10.0.35 and Xamarin is on 4.5.0.476) modal pages are just not working on iPads. They get added to the modal stack, as I can tell from debugging and looking at the Navigation, but they don't ever show up. I've tried different version of Xamarin.Forms including 2.3.5.239-pre3 and 2.3.3.175 (the last version of Forms that we had released on) and the problem still persists.
Is there something I am missing? It's working on Android phones/tablets and on iPhones just fine.