texmath-0.7: tests/writers/mover-09.tex
\underset{\phantom{fail}}{\overset{top}{-\ middle\ -}} = \overset{top}{\underset{\phantom{fail}}{-\ middle\ -}}
\underset{\phantom{fail}}{\overset{top}{-\ middle\ -}} = \overset{top}{\underset{\phantom{fail}}{-\ middle\ -}}