Firefox 3 (like older versions) ignores

TR { page-break-before: always }

for the first row of a TBODY. Sample page:

http://www.unics.uni-hannover.de/nhtcapri/temp/1000.html
Choose "Print Preview".

Internet Explorer 6/7 prints every row onto a new page;
Firefox does not. Is this an obscure bug? Or is FF right?

Btw:
IE 6/7 ignores page breaks with TBODY altogether.