Flex Ant Task introspection fails

I'm currently working on a project, where i am forced to use Ant builds instead of Flexmojos modules. But there is one thing bugging me, which is the introspection of the Flex Ant tasks. All task specific features are marked red, allthough i am only relying on the load-config option.

I added the jar via

<taskdef resource="flexTasks.tasks" classpath="${FLEX_HOME}/ant/lib/flexTasks.jar"/>

and additionally to the classpath using the Ant tool window. Am i missing something, is it Idea of is the jar not fully implemented, since running it via command line works.

Best regards, Florian