iOS 8 Beta iPad Height Bug - Wrong height on tab reloading

The whole red border should be fully visible inside the visible window!
The window.innerHeight variable reports the correct size, but html elements with 100% height relative to the full-page-height are 20px too large (only in landscape mode on the iPad)!

Current heights (testelement = the 100% height element with the red-border):

All values should be the same and smaller than the total screen height!

To see the bug:
  1. Open this page in tab.
  2. Now open an other tab and switch to it.
  3. Close Safari and kill it (via double tap and swipe out).
  4. Start Safari again.
  5. Switch to the tab with this test page.
  6. This page will reload and the height will be wrong.