CAIRO HIGHWAY glitch

**english is not my first language**

I lost a match in breakthrough because the enemy team was using a glitch... 
i didn't know how they got up there so i did a lil research on Google and turns out this glitch was discovered in the beta....
It's very disappointing when i try to enjoy the game and i get kill by people who use this glitch.
Also in the same map, there was people ''floating'' above roofs.

Here is a beautiful tutorial to show you how to fix it i guess.
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