The Divi hamburger icon does not work while editing a Content Template using Divi

Symptoms

If you are trying to design a Content Template using DIVI builder, you can see a hamburger icon at the most top right of the backend editor.

There is an issue where the hamburger icon doesn’t trigger the pop-up dialog that should contain the settings for the Layout being edited. Also, the following Javascript error is loogged in the browser console:

Error: Uncaught TypeError: Cannot read property ‘split’ of undefined

Workaround

This has been fixed in DIVI 3.28 .