id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
13080	Ugly notification when response has HTML content	Maciej	Tade0	"Error occurs when response from `imageUploadUrl` link returns HTML content, ie PHP server returns stack trace. 

Steps to reproduce:
1. Configure server to return stack trace for url set in `imageUploadUrl`
2. Use drag and drop to upload image
3. Observe ugly notification that overlaps page & editor

Ticket branch: https://github.com/cksource/ckeditor-dev/tree/t/13080

"	Bug	review	Normal	CKEditor 4.5.0	General	4.5.0 Beta