This is still a problem as of today, November 2018. Versions of all components are up-to-date:
Postfix 3.3.0 SpamAssassin 3.4.2 spamass-milter 0.4.0-1 According to http://www.postfix.org/MILTER_README.html#workarounds, this needs to be fixed in the milter implementation. -- David
