I am kind of able to duplicate what you are describing but it takes some effort. If I manually select font size, once the typing cursor is in an OE message box, it will remain the newly selected size as long as I allow OE to autoscroll at the end of each line or if I hit return to put a "hard" return near the end of a typed line.

But if I hit return at the end of a line a few or several times then use the mouse to relocate the cursor, instead of allowing an autoscroll or making a hard return, then font size returns to default.

Seems to me its a design quirk of OE. I tried to see if I could duplicate this in Word but it wouldn't.

So having said this, I assume you don't change the font size from default? LOL :7

If you do, then this may help explain it. If not, then whatever is causing it is probably related the this, but not identical.

Try not using the cursor, (or backspace, or up or down arrows) from a hard return to see if it continues to happen.

Jim.