Empty utPLSQL windows when `Show suites (hierarchical view of tests)?` is unchecked

Hello
I installed the plug in in sql developer 20.4. The plugin worked fine, I tweaked some preferences and now I do not get any results anymore. Running ut.run works fine.
![image](https://user-images.githubusercontent.com/64896707/125259246-6c831580-e2ff-11eb-8634-869e8da40658.png)

Any help is appreciated
Regard Erik
