Problems with Gecko when page contain element with contenteditable=true

"s.r" <[email protected]>
Newsgroups gmane.comp.mozilla.devel.editor
Organization http://groups.google.com
Message-ID <e88459c2-b4a5-43bc-9ce1-e1e56e33c259@e31g2000vbm.googlegroups.com> 
Good time of a day. I'd have a trouble with XForms. My bug appear when
page contain anywhere element with attribute contenteditable="true".
My bug is a https://bugzilla.mozilla.org/show_bug.cgi?id=528686.
Bug alike my is a https://bugzilla.mozilla.org/show_bug.cgi?id=490367.
Can you help me where I can find error? And is it bug of editor or
mozilla core or anything else?
Thank you for your attention.
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.