improper size in TexMaths

After upgrade from 5.0 to 5.2 the font size generated by TexMaths is too big.
For example: the text was in 12pt with math-equations done in 12pt, and now I have to re-compile the
equations with size 10pt to get size matching to 12pt text. Why?

Same here; however, the error only occurs when I compile the equation as a svg, not for png.