Please browse the following compressed file. If I run the following code:
MathPortionFontSize.pptx.zip (45.8 KB)
Presentation presentation = new Presentation(filePath);
((AutoShape)presentation.getSlides().get_Item(1).getShapes().get_Item(1)).getTextFrame().getParagraphs().get_Item(0).getPortions().get_Item(0).getPortionFormat().getEffective().getFontHeight();
I expect the return value to be 40, but I get 60 and the fill color seems to be wrong too.
MathPortionFontSize.jpg (372.5 KB)