\usepackage{lmodern} along with the Math font package \usepackage{newtxmath} and a monospaced font such as \usepackage[ttdefault=true]{AnonymousPro} should resolve the conversion problem.LaTeX documents not converting correctly
For some LaTeX documents, the mathematical symbols using bitmap fonts may not convert well (whereas OTF and TTF fonts are handled well). Using…
For some LaTeX documents, the mathematical symbols using bitmap fonts may not convert well (whereas OTF and TTF fonts are handled well).
Using