IOS safari does not render first part of progressive page until the second part is received

Hi, there:


I am testing the progressive rendering page which works fine in Mac. The page basically displays animation before disaply actual data. When I tested the page on the IOS safari browser, the progressive rendering is not working. The animation part is not displayed at all. The behavior is like the page is waiting for long time and then display the actual data.


Tried to debug this from the developer tool and noticed that browser actually receives the animation DOM elements, but just does not render/display it. Anybody encountered similar issue and know why this is happening on IOS safari?


Thanks!