Bug with Overall Signature Validity Icon

I am finding that there are inconsistencies in the way Adobe Acrobat 9.0.0 and Adobe Reader 9.0.0 indicate Overall Signature Validity states for digitally signed documents. Adobe's white paper on this issue at http://www.adobe.com/devnet/reader/articles/reader_compatibility/readercomp_digitalsignat ures.pdf clearly states when/how both these applications should indicate "Unsigned changes since last valid signature", being the icon of a signature with triangle containing an exclamation mark.
I performed the following steps:
1. Open a document already containing blank digital signature fields and Extended Features / Reader Rights enabled, in Adobe Reader.
2. Sign and save the document.
3. In the signatures panel, select "Validate All".
4. The overall signature validity icon of a signature and tick (indicating all is valid) is displayed, as expected.
5. Open the "Comment and Markup" toolbar, and place either a "sticky note" or "stamp" in the document.
6. In the signatures panel, select "Validate All".
7. The overall signature validity icon of a signature with yellow triangle symbol with exclamation mark (meaning unsigned changes since last signature) is displayed, as expected.
However, if at step 5 above I place any of the OTHER options (Text Edit, Text Highlight, Callout, Text Box, Cloud, Arrow, Line or Rectangle), and again "validate all", the overall signature validity icon still shows a signature and tick (i.e. it has not recognised the changes). In such cases, the "Annotations Created" entry also does not appear under the signed revision in the signatures panel.
8. Furthermore, if I sign the document again after adding any of the "Comment and Markup" options, and then "Validate All", the overall signature validity icon of a signature with tick and blue 'i' symbol (meaning all is valid but document was updated since initial signature) is displayed, as expected.
9. Then add ANY of the "Comment and Markup" options, and then "Validate All", and the overall signature validity icon of a signature with tick and blue 'i' symbol is STILL displayed. At this point I would expect the signature with yellow triangle symbol with exclamation mark to be displayed. Again in this case the "Annotations Created" entry also does not appear under the last signed revision in the signatures panel.
Can anyone else repeat this behaviour? It appears to be the same in Adobe Acrobat and Adobe Reader. Am I missing something or is it a bug?
Thanks,
David.
Canberra, Australia.

Philip,
The PDF file I was testing with originated from a Word document, created by Acrobat Professional v9.0.0. The document was created using the 'Convert to Adobe PDF' option that is embedded within the Word menus when Acrobat Professional was installed. From there I added the digital signature fields, text fields, check box etc, then 'Extended Features in Adobe Reader', and saved the document (replacing the original file) as prompted when extending the features to Adobe Reader. I don't have the LiveCycle Designer application.
The bug I am experiencing is not effected by saving or not saving. Today I started with the document created some time ago that I describe above. It contains several blank signature fields, no certification, a blank text field and a check box, and extended features in Adobe Reader were enabled. Today I opened that document, signed the first signature field and saved as a different file name when prompted. I then added a 'text box' annotation. I then selected validate all from the signature panel, and no changes are listed under Rev 1, just the remaining unsigned signature fields are listed. The overall signature validity icon shows a signature and tick. I then saved the document, and again selected validate all. No change to either rev status or icon. I then closed Acrobat Pro and reopened the document, and selected validate all. Still no change to rev status or icon. I then checked the check box field in the document, and selected validate all. The icon now shows signature with triangle containing exclamation mark, with comments regarding unsigned changes since last signature etc. There are also two entries under Rev 1 in the signature panel, the first labelled 'Annotations' which describes the text box, and the second labelled 'Form Fields Filled In' which describes the checking of the check box. In my mind, the 'Annotation' entry should have showed up (along with an icon change to show unsigned changes since last signature) when I selected validate all after adding the text box originally.
I am happy to email the document to you if you're able to provide an address.
Regards,
David.

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