iOS v12 Https requests errors

Question

I noticed that https requests made from my Ionic Angular app on iOS v12 are failing respectively never reach my backend.

I could confirm that my app is productive a

Answer 1

Test is issue, On iOS 12, below two ways will not run into this issue

1. request with HTTP
2. post request with form-data， not with json. if you post with JSON, will trigger option request, but webkit not post this request, so cros domain failed