Arrays should reset font selection in TeX #1468
Description
Currently, \mathbf{\begin{array}{cc}x&y\end{array}} produces a bold x (and a normal y), whereas in actual LaTeX, the x is normal not bold.
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Currently, \mathbf{\begin{array}{cc}x&y\end{array}} produces a bold x (and a normal y), whereas in actual LaTeX, the x is normal not bold.