Fails to warn on usage of non-existing command

[Alfonso Martínez de Lizarrondo]

Edit a sample and change the toolbar so it uses a non existing command:

var editor = CKEDITOR.replace( 'editor1',
	{
		toolbar : [ [ 'Source', '-', 'Bold', 'Italic', 'Underline', 'Strike','-','Link', '-', 'not existing' ] ]
	});

Load now the sample in the browser:

No warning, no error, no button. Nothing shows that there's an attempt to use a non-existing command.

People are gonna waste a lot of time trying to understand why their changes doesn't work if they don't have any clue about the problem.

[Jakub Ś]

Agreed this can be very annoying E.g. in case of a simple typo.

There should some console log warning/error. Definitely not an alert if it happens to regular user silent fail is better than alert.