Editor scrolls to the top when opening the context menu twice in a row

[infoland]

When opening the context menu in a 'long' document, but not selecting an option and opening the context menu again (with the right mouse button) the editor scrolls to the top while the right mouse button is depressed, and jumps back to the original location after it is released. (Unless the page the editor is in is HTML 4, then it does not jump back to the correct position).

This behaviour can be reproduced on the CKEditor demo with IE9 by copy/pasting the content a few times, scrolling down, right clicking, and the right clicking again.

The cursor position while the right mouse button is down is at the beginning of the document text, and it is possible this is inside a non-editable element. This element can then be edited!

[Jakub Ś]

To reproduce:

1. In IE9 in WYSIWYG copy demo contents and paste them few times at the end of document.
2. Select all and copy
3. Go to E.g. "replace by code" sample and paste the contents (In WYSIWYG not in Source mode)
4. open context menu two times

Result: In IE9 editor will scroll up and down. Reproducible from CKEditor 3.4.1.

Note: From CKE 3.3.2 to CKE 3.4 editor scrolled only up.

[Jakub Ś]

Scrolling up and down in IE9 was also mentioned in #8393

[Jakub Ś]

Other tickets that concern scrolling problems in IE: #8393, #8643, #5615

[Jakub Ś]

I did a quick test and it seems that patch from #7932 has fixed this issue.