Hi knob32 - that means that those glyphs are not present in the default font that MoI uses. You'll need to set the UI font to something that has those glyphs in it. That can be done in moi.ini under:

[UI]
UIFontNameV4=Open Sans

It works ok in the rest of the UI because the HTML part has a font fallback mechanism where it automatically uses a different font if needed. I was thinking of trying to implement that for the 3D viewport text display as well.

- Michael