Kakute F7 - OSD font in Mission Planner doesn't change

Hi folks,

I have a Kakute F7…and I am setting up my OSD in Mission Planner.

All is going well, except when I try to change the font, nothing happens. It seems to be stuck on clarity…no matter what number I type into OSD_FONT (zero thru four), or select in the drop-down box in the GUI, the font displays the same.