id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
7754	Style tag removed by undo command on Internet Explorer (Ctrl + z, or button)	Flavien CROCHARD		"Enter in source mode :

{{{
<style type=""text/css"">
  body {
    font-size: 14pt;
}
</style>
}}}

Back to wysiwyg mode, enter a letter. Finally, do an undo command, and see the source : the style tag dissappeared.
"	Bug	confirmed	Normal		General	3.0