Open Radar

 
Summary:
When leaving Safari whilst using it in horizontal orientation and then switching back to Safari using the app switcher, Safari ignores the horizontal orientation and requires you to flip the phone to vertical orientation and back, before it responds to the orientation in use.


Steps to Reproduce:

1. Open a random webpage using Safari in horizontal orientation
2. Switch to an app which doesn’t support horizontal orientation (either via the home screen or a push notification)
3. Keep your phone in horizontal orientation whilst double pressing the home button
4. Choose Safari from the app switcher (note that the app switcher shows in horizontal orientation) 

Expected Results:
Safari opens in horizontal orientation with the page scrolled at the place where I left it

Actual Results:
Safari opens in vertical orientation (with the page unloaded so it has to reload the page). You need to hold the phone vertical and flip it back to horizontal before Safari changes to the horizontal orientation.

Regression:
Problem occurs on the iPhone 5s 16 GB A1257 & the iPhone 5 16 GB A1429. 

Notes:
Problem doesn’t doesn’t occur on the iPhone 6+ A1524. Also the problem didn’t occur on iOS 7