Hello Peer Pijnenburg,
Welcome to the Microsoft Q&A forum.
Based on the information you provided, it seems like you are running the pipeline using the "debug" mode. This is the reason you are not seeing anything on the SHIR "Activities" tab.
To see the activities in the queue of a specific SHIR, you need to either use "Trigger now" or schedule the trigger. When you run the pipeline using "debug" mode, the activities are not queued and therefore do not show up in the "Activities" tab.
Please see the below screenshots for your reference.
I hope this answers your question.
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