Attempting to save, cancel or x certain modal dialogues are unresponsive in visual composer. For example, trying to save, cancel or exit a “create a textbox” modal is unresponsive.

Errors in inspector:

Uncaught TypeError: Cannot read property 'go' of undefined
Uncaught TypeError: Cannot read property 'activeEditor' of undefined

Failed to load resource: the server responded with a status of 404 (Not Found)
Uncaught TypeError: Cannot read property 'activeEditor' of undefined
_.extend.textarea_html.parse
vc.atts.parse
(anonymous function)
x.each.x.forEach
Backbone.View.extend.getParams
Backbone.View.extend.dataNotChanged
Backbone.View.extend.askSaveData
m.event.dispatch
r.handle
m.event.trigger
e.event.trigger
(anonymous function)
m.extend.each
m.fn.m.each
m.fn.extend.trigger
b.hide
m.isFunction.e
m.event.dispatch
r.handle

composer-atts.js

return this.window().tinyMCE.activeEditor.save();

“Uncaught TypeError: Cannot read property 'activeEditor' of undefined
Uncaught TypeError: Cannot read property 'activeEditor' of undefined”