no problem. if you find that behaviour annoying, wherein the fonts aren't actually using true sizing (i.e. the font scales up and down when you change the size of the chart) then please do go to Idea Place and see if that's been suggested as a change. personally i don't care for this at all as it makes matching fonts across objects (e.g. matching a chart to a cross-tab) quite painful.
i also put this particular topic in a "charting overhaul" as a catch-all suggestion for charts in crystal which is here.