When viewing a sparse CCR in Firefox, the tables are not drawn large enough to enclose the text. A sparse CCR is one in which many of the fields have no value, so there is not enough text to fill the width of the page.
If you then click one of the internal links, the tables are redrawn correctly. See attached screenshots, one before clicking and one after. This occurs when an xml file is requested in the browser, with an <xsl:stylesheet/> element pointing to the stylesheet - I don't think it's a problem if the ccr is run through an XSLT processor and sent as HTML to the browser. Also, the reference CCR at http://www.symbiont.biz/docs/samplexsl.xml does not show this problem, because it is full of data enough to fill the page width.
It's likely this is a Firefox bug and not a problem with the CCR XSL.
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File Added: CCR in Firefox after click.jpg
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File Added: CCR in Firefox before click.jpg
CCR before clicking an internal link
CCR after clicking an internal link
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File Added: CCR in Firefox after click.jpg
I think the problem might be the use of 'width' attributes to the table columns.