That’s not the expected functionality or result. Double check the PDF form field settings to be sure they are set to a font size and not set to ‘auto’. You can also try not using the Unicode option, instead changing the PDF font to Ariel or any other font that will render superscript.
Upload the PDF here if you’d like us to take a look at the font/superscript issue.
Setting the font size to Auto undermines the goal of our design.
And we already have the font set to Auto.
Would us choosing a different font, yet still leaving the Size as Auto potentially solve the problem?