@andreas bright Thanks for posting in our Q&A.
Based on my research, this is a known issue. We suggest to feedback in the intune uservoice in the following link. This is a place to collect customers' requirements and problems. If more and more people have this requirement, maybe the Intune product group will consider this feature.
https://microsoftintune.uservoice.com/forums/291681-ideas/suggestions/32880604-the-company-portal-app-does-not-recognize-apps-tha
Thanks for understanding and have a nice day.
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