I tried making a footnote smaller in a message via HTML and it worked perfectly, so that is a simple option for the occasion when I want text smaller than available through the "text size" button.  I note others used to use the text size button a lot however, and I'm guessing the HTML button is not available to members?

BTW, it seems that in the new code, some of the HTML code looks slightly different, and I've had to figure out a few small changes when I do simple things like align a photo in a message.  Nothing major, just looks a bit different to my eye.  I'm strictly an amateur with HTML, and I don't mess with anything unless I know I can do it--thought I'd add that.