Switching tabs breaks background images when using the CSS styling perspective

Any ideas why?

What steps will reproduce the 开发者_如何学Cproblem?

1. Load the following fiddle: http://jsfiddle.net/bhellman1/4fTeA/1/
2. In the result box, scroll down a half way
3. Switch to another tab
4. Then go back to the fiddle, notice the background image broke, it's gone, and all you now see it the background color

The background-image should persist when tabbing through chrome. Instead, switching to another Chrome tab breaks the background-image

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Getting rid of all of this code fixes it for me:

#number .flipper {
    perspective: 1000;
    -o-perspective: 1000;
    -ms-perspective: 1000;
    -moz-perspective: 1000;
    -webkit-perspective: 1000;
}

Not even sure what that does exactly.