UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2658.0 Safari/537.36

Steps to reproduce the problem:
I was unable to make demo case with a bug (in reasonable amount of time), 
so I've recorded a commented video:

https://drive.google.com/file/d/0B9bW0B92XgnANnZYRlZTVG9Nczg/view (1 min)

Here you can try it live:
http://memory-game.paqmind.com/

If this information is not enough I'm open to additions. 

What is the expected behavior?
DOM node is visualized correctly

What went wrong?
DOM node is not visualized correctly

Did this work before? N/A 

Chrome version: 50.0.2658.0  Channel: n/a
OS Version: OS X 10.9.5
Flash Version: Shockwave Flash 21.0 r0

I believe this bug is about elements with CSS style "backface-visibility: hidden" not being rendered correctly after they was updated but I can't be 100% sure.