Fabric dataflow gen2 cannot be called from pipeline

Has anybody encountered the same problem as i?

I have created a dataflow gen2 and checked the box to support Git integration for that dataflow.
I copied the contecnts from another dataflow without that integration into the newly created one.
I was able to adjust the connections and save that new dataflow.
I wanted to call the new dataflow from a pipeline which calls the older version currently.
Unfortunately I am not able to chose the dataflow, it is not presented in the dropdown. If I chande the JSON code for the pipeline exchanging the UID of the two dataflows, the pipeline runs into an error.

Here are my two dataflows with identical content:

and here what the pipeline activity allows me to select:

The GUID ist coming from my change to the JSON and belongs to the dataflow which can be checked into Git.

So currenly I have to chose between unsupported dataflow  with the possibility to call the dataflow or git integration without being able to execute that dataflow.