id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
14895	Uncaught IndexSizeError JS error	Karen Ananiev		"We faced this issue in different conditions but there are the steps to consistently reproduce it. It seems normalization of bookmark sometimes works incorrect so Undo feature stops to work.

== Steps to reproduce ==

1. Open CKEditor demo http://ckeditor.com/demo
2. Clear all contents
3. Enable SCAYT
4. Apply Heading 1
5. Type something like ""abababab"" then hit Shift+Enter
6. Move focus out of the editor
7. Click inside editor to back focus and hit Shift+Enter again
8. Type ""test"" and select it
9. Apply Heading 2
10. Perform Undo one or two times

See attached video with all of these steps.

== Expected result ==
Undo works

== Actual result ==
Undo doesn't work. There is JS error ckeditor.js:415 Uncaught IndexSizeError: Failed to execute 'setStart' on 'Range': There is no child at offset 6.

== Other details (browser, OS, CKEditor version, installed plugins) ==
Chrome

----

There is one more case with the same error.

== Steps to reproduce ==

1. Open CKEditor demo http://ckeditor.com/demo
2. Place cursor after the heading and hit Shift+Enter
3. Move focus out of the editor
4. Back focus and type ""test""
5. Select ""test"" and apply Heading 2

JS error in console: ckeditor.js:380 Uncaught IndexSizeError: Failed to execute 'setStart' on 'Range': The offset 7 is larger than or equal to the node's length (4).

"	Bug	confirmed	Normal		General	4.5.7		Webkit Blink