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This extension works fine. But it hides icons for S/MIME reporting about the e-mail (signed, encrypted) even it does not hide ENIGMAIL/PGP information (signed, encrypted). This is not possible to file bug report (the Bugzilla says I'm not approved to file bug against this component).

Это отзыв для предыдущей версии этого дополнения (2.0.8). 

Sorry but I cannot confirm this (with Thunderbird 33.0 beta and CompactHeader 2.0.9beta2)
Could you please post a bug report with additional information (Thunderbird/CompactHeader versions, screenshots?) to the support forum:
http://forums.mozillazine.org/viewtopic.php?f=29&t=1405155&p=7170965