Why doesn't the ItemAdded Receiver get called when a task was created by a workflow, but when a user created a task it does? I tried setting the Receivers ListUrl to my list URL and tried using the list template id 107. In both ways only a manual added item will call the item added receiver.
What I try to accomplish is the following: whenever a task is added to the global task list, i try to get the due date of that task and update an item in an other list with that value. The problem here is that task items which are created by workflows do not seem to trigger my ItemAdded Receiver.