It has been alleged in some other post(s) re this problem that the green band occurs only when "sign" in some form either by itself or as part of a word such as "signature" occurs in the PDF. So one should avoid all words containing the string "sign" in your documents until Adobe has finally come to its senses and bases its decision on something stronger such as requiring that the PDF security property "Signing" be set to "Allowed" (see File menu: Properties: Security). This security property is set to "Not Allowed" in all my documents that trigger the green band, and all of these have "sign" in them somewhere.
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