When using Acrobat on desktop, one tool we use for internal commenting is rectangle tool in the "Drawing Markups" palette. Once you draw a rectangle, if you double click the red border of the box you can add a text comment which basically adds a sticky note to the box border. However, when viewing that PDF on the Adobe Acrobat iOS app, the red box is visible but there is no way to see/view the comment added with it. As a side note, the iOS app "iAnnotate PDF" allows the bubbles to be tapped and viewed. Please don't comment on the process mentioned above, not looking for a work around, looking to have this looked in to and fixed in a future Acrobat iOS release.
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