Battlefield 4 Siege of Shanghai "Sinkhole" glitch

Hey people!

So today i was playing Siege of Shanghai and i walked up to the 2nd staircase on the right side of C flag (US perspective). 

Basicly what this allows you to do is get in there and go under the map (prone) and shoot people when you're half in the hole (Crouch and Prone)

You can see the whole Russian side of the map (from D to the big tower with the lift) and shoot anyone without them noticing you. 

I got hitmarkers on people doing this, and my friend actually got kills. So it's a nasty bug and i reported it to EA and they asked me to post it here so anyone can use it and give feedback. 

Here's a video i recorded showing the glitch/bug: https://www.youtube.com/watch?v=j6zDvJOr92U&list=UUfhVz3fDo-tON_bsnWl55sw

Thanks,

Noah/97Noak