Open Radar

 
Summary:
See the attached project + video. Basically we are just displaying a WKWebView and navigating to google.ca and at some point it decides to scroll to the bottom of the page.

Stackoverflow: http://stackoverflow.com/questions/33445988/wkwebview-content-jumping-on-load
Potentially related problem Mozilla is having: https://bugzilla.mozilla.org/show_bug.cgi?id=1219241

Steps to Reproduce:
Just run the project in the simulator or on a device.



Expected Results:
0 scroll position (top of page), not overlapped by header

Actual Results:
After a slight delay (1-2 seconds) the page jumps down.

On my simulator (iPhone 6 - iOS 9.1) it seems to jump all the way to the bottom of the page.

On a device (iPhone 6 - iOS 9.0) it seems to just ignore the header bar and the view starts at the top of the screen. If I scroll up and let go, it'll scroll back down so that google's page header is underneath the app's header.

Version:
iOS 9.1 (13B137), iOS 9.0 (13A344)

Notes:


Configuration:
iPhone 6 simulator (iOS 9.1). iPhone 6 device (iOS 9.0)

Attachments:
'ScrollingHack.zip' and 'GoogleScrollJump.mov' were successfully uploaded.