What I want to know is why this post got downvoted.

yes i accidentally mantle all the time and it triggers me 

Double tap jump to mantle is what it was like in older cods I think

If they just made it so holding the jump button made you mantle and just tapping it made you jump it would be perfect afaik

Accidentally mantling due to jumping by an object has gotten me killed quite a few times in this game. No idea why they dont have an option to disable it seeing as this will definitely affect the pro scene as well as they jumpshot a lot in there. 

We Need an Option to Disable Auto Mantle