CKEditor error, Uncaught IndexSizeError: Failed to execute 'extend' on 'Selection': 1 is larger than the given node's length

Question

After setting blurDelay = 0, then click Bold and click Paste in toolbar, it will throw the error below.

Uncaught IndexSizeError: Failed to execute 'extend' on 'Selection': 1 is larger than the given node's length.

CK version:"4.4.6",revision:"08188c4"

Only in Chrome, IE and FF will be fine

jsfiddle: http://jsfiddle.net/mfine2/98rwv6Lt/

bug ticket: http://dev.ckeditor.com/ticket/13241

Javascript code.

CKEDITOR.focusManager._.blurDelay = 0; 

var ck = CKEDITOR.replace( 'editor1', {
    fullPage: true
});

ck.on( "blur", function( evt ){
    console.log(this.getData());
});

Answer 1

I have checked your test case and there is error being thrown in Blink browsers only (IE and FF work fine) but you are manipulating private property http://docs.ckeditor.com/#!/api/CKEDITOR.focusManager._-property-blurDelay which is for internal use of CKEditor only.

One of the reasons we use properties like this one is get rid-of subtle differences between browsers or errors that may get thrown in certain scenarios. When you leave this property untouched there is no error and I think that sums it up. You should not manipulate editor internal properties.

Answer 2

The problem you encounter is probably related to : https://github.com/ryancramerdesign/ProcessWire/issues/1335

The issue is that CKEditor's getData() method fails (and produces a JS error) when called before the field is blurred, after certain conditions (like inserting an image)

It was a bug affecting chrome, opera and safari. Throwing the same JS error.
Bug FIXED since CKE v4.5.5

Still to be tested with your modification of blurDelay though.