Hello @Jan Zachmann ,
welcome to this moderated Azure community forum.
because the SDK is available in GitHub, please create an issue at the repository so the owners of that repo are notified.
Please provide the link to the issue here as a cross reference.
If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.