texmath-0.6.7: tests/writers/mover-04.tex
\overset{\mathrm{top}}{\mathrm{middle}}=\underset{\phantom{\mathrm{fail}}}{\overset{\mathrm{top}}{\mathrm{middle}}}\overset{\mathrm{top}}{\mathrm{middle}}=\underset{\phantom{\mathrm{fail}}}{\overset{\mathrm{top}}{\mathrm{middle}}}