# Hover underline styles behave oddly with multi-line mathematical expressions in title, such as $\dfrac{72_8!}{18_2!}=4^x$

I took this screenshot while hovering my cursor over the first question. As you can see, the dotted underline cuts through the denominator of the fraction. Looks like a CSS bug.

• Display-style math, such as dfrac, should not be used in titles. I edited the title to remove it, but included the same example here, so that the developers have a live demonstration of it. I don't really think this is a bug: the underline is correctly placed under the text, but MathJax-rendered formula protrudes beyond the space of one line. – user147263 Dec 11 '14 at 5:08
• I have this problem even for normal frac or anything that is longer than normal text (sigma etc). Does anybody else share my problem? – jdoicj Dec 11 '14 at 7:46
• Is it really that bad...? – Najib Idrissi Dec 11 '14 at 9:11