[Wax] MathML equations are not displaying

When importing a manuscript containing MathML equations; the centre-aligned equations ($$) are not rendered. It appears as if the equations are imported and a 'heading 4' style is applied on conversion. If you copy-paste the formula and place in a new paragraph ($) then the equation renders. Centre-aligned equations should be supported on import.

Word doc example;

Wax production editor view;