Notes defaulting to all caps

This is not the first time this has happened to me, but the problem went away for a good while. Now it's suddenly back. Every time I type a note, it's in all caps (I don't have the caps lock button on). This is happening on two different Macs, even one that I recently completely wiped and re-loaded with Adobe software.  I can turn it back to normal if I highlight the text and either hit shift-command-k or go to the Paragraph Styles panel and select "basic paragraph," but both are a little bit of a pain. I can't find any options in the preferences section that will fix this. Does anyone have any ideas? Is there some place you can globally set paragraph styles for Notes?