I have come across a very strange bug -- not sure if it in my app, Xamarin.Forms, or iOS itself.
My app switches between several pages derived from ContentPage. When I have my app and another app, for example the iOS "Pages" app on my iPad side-by-side (half screen). It seems to be related to whether the other app is in an input field before switching. Anyway, I press a Button in my app to switch to another page, and my page is kinda there, but the dark blue background want is white, plus no interaction (so, appears "frozen"). But, if move the slider to make it a 2/3 split, it immediately works.
When my app starts in 2/3 screen mode, the result is a bit comical -- the first half of my app is OK (the leftmost third of the screen), but other half refuses to allow interaction (and has white background). Weirdest thing -- one of my buttons straddles the break -- the left part works fine, the right does not.
I've not seen this on an iPad that has not updated to 13.x yet. I'm suspcious that this might be the same issue or related to White Screen after navigating to MasterDetailPage on iPAD iOS 13.2 and iOS 13.0 Broke MasterDetailPage on iPads?, so I added tags that might relate. But, here's the thing -- I'm currently using XF 4.3 (4.3.0.991221). The "solution" for the others was to update to 4.3. And, I'm not really using MasterDetailPage, and those issues don't mention SplitScreen.
I'd just like to hear if someone else has seen something like this, or has any quick suggestions before I try to create a simplified example.