I just added a template style to fa:Template:allow wrap and then tested this page which uses the template but it did not have the desired effect. I looked at the browser console while loading the page in debug mode and noted that the output of the TemplateStyles is rendered like this:

'"`UNIQ--templatestyles-00000001-QINU`"'

Hard to see above, but this starts with a \u007f and ends with one too. In other words, the string is:

\u007f'\"`UNIQ--templatestyles-00000001-QINU`\"'\u007f"