# MathML displays square roots of fractions incorrectly

I had set my preferences to use MathML, but I've just realised it fails to display square root of fractions correctly. With MathML, $$\sqrt{\frac{n-2}{1-r^2}}$$ looks almost the same as $$\frac{ \sqrt{n-2}}{1-r^2}$$ In particular, the square-root encloses only the numerator, which changes the interpretation of the formula

I'm using Firefox 3.6.10 under Windows XP Pro Service Pack 3. I selected MathML by right-clicking any displayed formula to display a context menu and selecting Settings => Math Renderer => MathML.

Apologies if this is a MathML problem rather than a StackExchange problem. I don't know where to raise MathML bugs though.

EDIT: Snip of screenshot as requested:

• I'm unable to replicate, mind posting a pic of the problem? – Andy W Feb 21 '11 at 2:16
• The square root of the entire fraction in the first expression looks fine to me (FireFox 3.6.13 on Win 7/64). Exactly how was the screen shot generated? What browser, what OS, which Web page? – whuber Feb 21 '11 at 14:10