There seems to be a bug when displayed in TabContainers. When not in a TabConainer, the editor looks correct. When within a TabContainer I get the original TextBox displayed and either the HTMLEditor is 1px wide and as long as the page, or right below the TextBox.
Comments: Same problem here. This bug makes the HtmlEditorExtender useless for me.
Comments: Same problem here. This bug makes the HtmlEditorExtender useless for me.