Please don’t post in the Alpha/Beta forum unless you’re actually testing the alpha/beta version of WordPress (not a plugin or a theme). Also, once WordPress has released a version, it’s not appropriate to post in alpha/beta and you should post in the How To & Troublshooting forum:
https://ww.wp.xz.cn/support/forum/how-to-and-troubleshooting
This post has been moved out for you.
The answer to your problem is found in the 4.5 master list – https://ww.wp.xz.cn/support/topic/read-this-first-wordpress-45-master-list – which is stickied to the top of How To & Troubleshooting.
Visual Composer – Please upgrade to 4.11.2+. The compatibility issue was fixed in Version 4.11 on March 10th: https://wpbakery.atlassian.net/wiki/display/VC/Release+Notes
