id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
16788	[IE10] IndexSizeError while aborting image upload via undo/redo	kkrzton		"== Steps to reproduce ==

1. Go to http://tests.ckeditor.dev:1030/tests/plugins/uploadwidget/manual/image#child.
2. Drag and drop image.
3. Click undo while image is still uploading.
4. Click redo (image will not show as upload was aborted).
5. Drag and drop image.
6. Click undo while image is still uploading.
7. Click redo.

== Expected result ==
Nothing happens as image upload is aborted. Redo cannot be clicked again.

== Actual result ==
Error is thrown while redoing. Redo is active and can be clicked multiple times (throwing error every time).

{{{
SCRIPT5022: IndexSizeError 
ckeditor.js, line 430 character 258
}}}


== Other details (browser, OS, CKEditor version, installed plugins) ==
IE10, CKEditor 4.6.2.

"	Bug	confirmed	Normal		General	4.5.0