I recently edited a question Dynkin type classification for 2-dimensional hypersurfaces in non-commutative space, and entered as my edit summary "$<x,y>$ -> $\langle x,y\rangle$" $<x,y>$ -> $\langle x,y\rangle$
. To my surprise, rather than displaying as it does here, this summary displays in the list of revisions as:
Why is each $y$ and each closing delimiter set on a separate line?