low_priority_updates broken with MyISAM and RBR on MySQL 5.5.30

Hi there,
This bug ([url]MySQL Bugs: #69585: low-priority-updates not working on replication slave) has not been looked at yet as far as I can tell, but we are still struggling to get low_priority_updates to work with on replication slaves and Row-Based Replication with MySQL 5.5.30 64-bit on Windows Server 2008, its a big nono you’re running MyISAM and can’t use this option. Are we possibly doing something silly (other than not running InnoDB yet?)