Unable to add new content when Collapsibleltem title is empty

[adriano66]

CKEditor is "crashing" when you load content with Collapsibleltem markup with empty title.

I know this is some edge case and not an intended way of using the plugin but we might add some simple fix to prevent the editor from being unusable.

eg. You've added new Collapsibleltem with empty title and saved it into DB, after you load such content into editor most of the buttons will gray out due to JS error - "a is undefined" as title link will not be saved.

[pkerspe]

Hi Adriano,

thanks for the report. Can you please provide Details on the Borwser (Make and Version) and OS you use?

Thanks a lot

[adriano66]

WIN10, Firefox 53.0.3 (32-bit)
WIN7, Chrome 58.0.3029.110 (64-bit)

But it shouldn't matter as error is caused by non existing node and occurs while trying to attach attributes to empty node.
https://github.com/pkerspe/ckeditor-bootstrap-collapsibleItem/blob/master/plugin.js#L73

I just found the easiest way to reproduce the bug.

• Add new collapsible element
• Remove all characters from title
• Switch to source
• Switch back to WYSIWYG

I was using this build http://ckeditor.com/builder/76330dc789253a1b6b9955786dbe3379