dynamic adding animations on a element but resulting the wrong z-index

[zhanglei]

the below only appears on the iphones
sometimes i want to dynamicly add some animationClass on an element , it's expected to display the animation according to it's z-index or the rendering stack index , however i got the result that the element which i dynamicly add animationClass always displays the animation on the top view level on the iphone , but it displays the animation on the right view level which it's expected on other plats(android, pc).

i test it on the newest chrome browser(iphone) and all browsers on (iphone), it act as aboves。so it's expected to act so (however it acts different on different plats)? or it should be fixed.

please tell me ,thx .

[zhanglei]

for example sometimes i have a mask layer on the top view , in this state , the element which i dynamicly add animationClass should do the animation behind the mask layer , but it plays the animation at the front of the mask layer

[Simon Fraser (smfr)]

Please attach a testcase.