Quote:Duty Mobs
Currently the bot cannot detect mobs which belong to another players duty resulting in the bot attacking these mobs even though it cannot harm them. Generally this is not a crippling issue because the mob will die and the bot will continue to function properly but it is recommended to avoid meshing/marking areas where duty mob spawn is common to avoid the issue altogether if possible.
Already a known issue. Took this quote from the Tutorial for Grinding.