Ever since the forum update in June, Latex went from displaying

$\displaystyle \displaystyle \sum_{n=0}^\infty \quad \int_a^b dx \quad \prod_{p\equiv1 \; (4)} f(p) \quad \left(\frac1{x^\sqrt2}\right)^a $

to

$\displaystyle \sum_{n=0}^\infty \quad \int_a^b dx \quad \prod_{p\equiv1 \; (4)} f(p) \quad \left(\frac1{x^\sqrt2}\right)^a $

The fix for this is to start your latex code with \displaystyle.

Why did this change and is there a way to get it back? I can't imagine anyone not wanting their latex code to look as good as possible.