140018 2014-12-31 11:18:09 -0800 Content of iframe inside absolutely positioned div scrolls to top on reflow, and iframe height shrinks 2014-12-31 15:28:29 -0800 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) iPhone / iPad iOS 8.1 NEW https://bugs.webkit.org/show_bug.cgi?id=139694 P2 Normal --- 1 malsup webkit-unassigned benjamin enrica simon.fraser oldest_to_newest 1058270 0 243851 malsup 2014-12-31 11:18:09 -0800 Created attachment 243851 Contains two files: ios-test.html ios-test2.html ios-test.html is the main file to load in the browser. ios-test2.html is the iframe content source file. Scenario: When an iframe with sufficiently long content resides w/in an absolutely positioned div strange behavior occurs when a reflow is triggered near the bottom of the content. The scroll position of the iframe content gets reset to zero and the height of the iframe itself changes to match its parent. Attached file: ios-iframe-scroll.zip which contains two html files: ios-test.html ios-test2.html Steps to repro: Load ios-test.html in mobile Safari on iPhone or iPhone simulator. Scroll to the bottom of the page and select the last radio button. Observed behavior: You will see that the contents of the iframe automatically scroll to the top and the iframe height changes to no longer account for it's full content. Expected behavior: There should be no change in the scroll position or size of the iframe. Additional information: If you remove the position:absolute style rule on the div the behavior is correct. Webkit Version: 600.1.4 Browser name: iPhone 12B411 600.1.4 1058286 1 ap 2014-12-31 15:28:29 -0800 Possibly a duplicate of bug 139694. 243851 2014-12-31 11:18:09 -0800 2014-12-31 11:20:07 -0800 Contains two files: ios-test.html ios-test2.html ios-test.html is the main file to load in the browser. ios-test2.html is the iframe content source file. ios-iframe-scroll.zip application/zip 758 malsup UEsDBBQACAAIANZrn0UAAAAAAAAAAAAAAAANABAAaW9zLXRlc3QuaHRtbFVYDAAwRKRU1ECkVJ2K KzI1kE2OgzAMhdfkFBmkWVLoLCFwl5AYiBowSgwIVb37mJ+u3pOTZ3+2+rFoaJ9BDjT6RqivgLYs I5CWkx6hXh1sMwaSBieCierUTY6c9lk02kP9fBQpByLtHhrRot3lW4469G4qZSE/wrpVvkUyY+QY clG3Ef1CUImEcOZPlfTQ0WmC64fLtUiE42FFgiuEzuPG2YWQC9kG7ctR9n1gloDeu6kvJeFihkp8 hOsCL8A01sXZ672UrUfzYiSV37gqv/c9uBshFMM2IlF3dIADp34Wxa/cnKXhsjEYvgLGjCDS3+O4 XNqo/AodTc8urFdXHnLe9h9QSwcIzZEpfPMAAABzAQAAUEsDBBQACAAIAAhsn0UAAAAAAAAAAAAA AAAOABAAaW9zLXRlc3QyLmh0bWxVWAwAMESkVC9BpFSdiisy7da9CsIwFIbh2V7FsatIBsGhHAMW RAWxgzqJQ9scbTBtSht/qnjv9kcXJy8g05flfdYT7AsdmyonSEyquIPfoVDUU5pKEXciLSp4wlFn ZljKB3kwGud3eDkyyy9m3/QTtwiF1O7BixOKzyRgACqMSH27G8lTYjyItBJ1iexjY4PXc9RFyp0e Cnnl2LrQui0LWZjSJOPYkjxYz5B1T2RN8Ge3DDbg7+awnW22FrCABSxgAQtYQHF/NV38hMi6o4zs c6NZ9zt4A1BLBwgoB2uDxwAAADUIAABQSwECFQMUAAgACADWa59FzZEpfPMAAABzAQAADQAMAAAA AAAAAABAtIEAAAAAaW9zLXRlc3QuaHRtbFVYCAAwRKRU1ECkVFBLAQIVAxQACAAIAAhsn0UoB2uD xwAAADUIAAAOAAwAAAAAAAAAAEC0gT4BAABpb3MtdGVzdDIuaHRtbFVYCAAwRKRUL0GkVFBLBQYA AAAAAgACAI8AAABRAgAAAAA=