- Log in to Share as any user;
- Create any site, create/upload some folder/document;
- Open folder's/document's details page;
- Click "Add Comment" button, type any comment and click "Add Comment" or "Cancel" button;
- Navigate to any site's page clicking on any link (e.g. "Document Library") =>>
Result: Warning with a script error is displayed:
Closing the warning the desired page is opened.
Reproduced for IE9/IE10