I suggest that font used for tab names in Styler Configuration dialog should be changed to avoid this bad looking effect with Terminal font.
In MFC, that could be done by setting the system font or Sans serif 8 to the controls with something like this:

  CFont m_font;
  if (!m_font.CreateStockObject(DEFAULT_GUI_FONT))
      if (!m_font.CreatePointFont(80, "MS Sans Serif"))
          return -1;