PenciDesign replied
Hi,
\As I said in my previous comment - you need to deactivate all plugins and enable each plugin to find what's plugin caused this issue.
\After enable each plugin, refresh the page you editing and check it. If you see a plugin make VC doesn't work after activate it - that's plugin you need to deactivate.
\Check this video for more clearly - it's quite the same:
\ \ \ \Best Regards,
\PenciDesign