I have a tree structure, consisting of category nodes and question leaves. I've add a drop source to question with the tag "Question", and a drop target to category with the same tag. Both are flagged as enabled. I get the same issue whether I have scope "global" or "component interface". They have no bound properties - everything is statically defined. I have an onDrop and onAction action defined on category. I have an onAction action defined on question.
When I launch my web dynpro in the browser, it works fine. I can drag a question on to a category and the onDrop triggers. (And the question is moved into that category).
If I now click on the question, the onAction triggers, and I record the selected question. This is so I can then click on an edit button and I know which question is selected, so I can display the edit VCU. However, when I dismiss the edit VCU, drag and drop no longer works. I can pick up the question, but when I hover over a category, I just have the red circle "not permitted" cursor.
It looks like the onAction is disrupting the drag and drop functionality. Any suggestions why this should be?