Change in certificate validation algorithm in Adobe Reader 10.1.2

Some experiments I have done with both Adobe Reader 10.1.1 and 10.1.2 show that their implemented algorithm vor validating the certificate of a signature is different:

• In all versions of Adobe Reader up to and including 10.1.1 no revocation checking is performed for a certificate marked as a trust anchor.
• In Adobe Reader 10.1.2 revocation checking is performed even if a certificate is marked as a trust anchor.

Since the latter behaviour is in conflict with international standards for certificate validation (RFC 5280, section 6.1), my questions are:

1. Has this shift in the implementation happened intentionally?
2. If yes, why?

/Gregor