Widgets fail to render if multiple CodeEditorWidgets are used in a form

[mattaustin]

When using the following form in an admin class, neither html or css ace editors are rendered correctly:

Class PageAdminForm(models.ModelForm):
    html = forms.CharField(widget=ace_editor.CodeEditorWidget(mode='html'))
    css = forms.CharField(widget=ace_editor.CodeEditorWidget(mode='css'))

    class Meta(object):
        model = Page

In the above example, the ace editor is rendered for html, but does not correctly show the content, and the editor for css is broken but with content displayed. If I remove one of these, then the remaining widget is correctly shown.