IE: Unable to scroll the editor, if the image in the editor is selected

[IBM_RQM]

Environment: Browsers: IE 7, IE 8

Description: If an image (which is larger than the editor's size) is selected in the editor and vertical scrollbar or horizontal scrollbar are contained within the image, then clicking on the scrollbar in IE 7 moves the cursor to the end of the editor and clicking scrollbar in IE 8, leaves our product in a bad state which leaves none other option than closing the browser.

Also if image size is larger than the editor's size, then image selection can be seen outside the editor.

This behavior makes user unable to scroll the editor.

This is not reproducible in FireFox.

Please see the attached screenshot.

I can reporduce the issues on the ​http://ckeditor.com/demo as well.

[Jakub Ś]

DUP of #7472.

Large image covers toolbar buttons and scrollbars (Although mouse wheel for vertical scroll bar works).