Open Radar

 
Summary:
This is a duplicate of radar #33547693

In beta 4 there is a regression in MapKit where overlays are not being rendered. I noticed this in my own app where Polylines and MKOverlays are no longer showing up (only annotations seem to work), leaving me with basically a blank map.

The code was unchanged on my end, and has worked fine since iOS 8. It also worked fine in iOS11b3. I confirmed the regression is not specific to my app by trying to run the KMLViewer sample code (https://developer.apple.com/library/content/samplecode/KMLViewer/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010046).


Steps to Reproduce:
1) Download the KMLViewer sample code at https://developer.apple.com/library/content/samplecode/KMLViewer/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010046
2) Run it on device or through the simulator for iOS 11 b4

Expected Results:
What is displayed should be the same as what is seen in iOS 10 - a pin annotation with multiple overlays of different colors surrounding it.

Actual Results:
Only the pin annotation is visible.

Version:
iOS 11.0 b4

Notes:
In my testing of iOS 11 b4 I did notice that the overlays do eventually render if you zoom the map out with a punch gesture. But without interacting with the map, the never render.