Its all are happening due to new WordPress Jquery/js library compatibility.
I also faced the same problem on my website that time I did some experiments and got a fantastic solution for this problem so if you are facing the same issues about VC broken just contact me I will fix this issue for you.
Gig Suitable for:-
- Visual composer issues
- visual composer error
- vc fatal error, update problem or compatibility issues.
VC fixes for WordPress 4.5
I will fix all visual composer issues which are raised after WP 4.5 updates