TypeError: 'null' is not an object (evaluating 'd.toLowerCase')
It appears in the admin-panel, when I go to the list of my forms, click "edit", and want to "hover" over a field, to edit the field. I.e. the blue box with options is not displayed.
The same feature (blue box with options) works fine, when I am on the "create a new form" page. As soon as the form has been saved, and I want to "edit" the form, it doesn't work anymore.
It's all newest versions of Wordpress and Gravity Forms. It happens in the admin-panel, so there shouldn't be any Theme og Plugin conflicts.