Default font on Success Plan text boxes are incorrect

When you enter text into the text boxes on a success plan (Description / Action Plan etc) the font in the panel is shown to be Sans Serif but when text is entered, it is Serif.

The real UX problem here is that to change the text from Sans Serif > Serif, you need to highlight the text and change it to Sans Serif (no change) and then change it back to Serif.