Underline feature doesn't hold when creating a web link, reverts to rectangle box after you save.
Creating a web link inside a pdf and the underline setting works while in the Acrobat app but once you save and open in Mac preview it shows up as a rectangle. Color effect is correct at least. I also tried opening in Chrome and no rectangle or underline although the link feature still works.
Acrobat Pro DC v 21.0
Mac OS 10.15.7
MacBook Pro 16" 2019