Why can't I change the border color of a text field? Just added a text field, and in the Appearance box, the border color is empty (red bar). I want a visible border, but when I choose a border color, the choice doesn't stick.
I am using Acobat Pro DC on Mojave and am having a similar issue. I created a form and didn't add borders to the fields when I created them, but now I want to add borders to the fields and I am not able to do so. The option is greyed out.
I have a similar issue. My iMac is up to date on both MacOS and Adobe Acrobat versions
Having this issue as well.