Does anybody know how I can set up a manually activated tasks in a way, that it changes the status directly to the edit mode with one click? So that the user does not need to first click to activate it, and then click a second time to open it?
Note that this is the open-source forum. As Design is an enterprise product, the question is better suited on the enterprise forum: https://forum.flowable.com/
Assuming you’re talking about Flowable Work (as you mention Design), isn’t that what happens? The task is already open to click on the activate button.
That’s a more tricky problem: there could be 0-x tasks active when the process instance is started. A new query would need to be fired from the UI and a random one would show up (hence why now nothing is shown)