Hidden Acrobat comments exposed through Apple Mail Maver-ick

Question

Acrobat Pro on Maverick has botched up the capability for me to hide areas of an edited Acrobat document. I created many PDF documents and over the last 5 years.  I will create a rectangle of solid white in the comments tool and a cover selected areas of copy I want to hide from the intended recipient, or add typwritter comments over the white box I create to modify the original content. This process of editing my estimates worked well in all previous versions of Mac OS until Maverick.
I have not upgraded my macbook and it created the covered file which I sent through G-Mail then opened it in my iMac with Mavericks and Apple Mail and the type was exposed the copy I covered up. 
Mavericks has messed up Acrobat's commenting function.
Rich

Answer 1

I hate to break it to you but maybe your system for redacting content was flawed for all these years.
The comments box isn't intended for this & you may have been leaving them exposed in other PDF readers. Simply layering white comment boxes doesn't necessarily remove the underlying text, especially when the text is 'image based' on another layer. It's equivalent to using a post-it note to redact a physical document, the text still exists if you know how to lift the layer.
PDF Pen is another app that can redact sections if you want another tool. Acrobat should have an actual redaction tool, check it's help. Also look for updates as Eric suggested. 
Mavericks may actually be saving you from an incorrect assumption.