Hi @Hofmann, Frank,
SharePoint does not support uploading files directly from a zip archive. This is not a bug or issue, This behavior is by design and there is no direct workaround for uploading files from a zip archive. To upload files to SharePoint, the files must first be extracted from the zip archive and then uploaded individually or as a group.
Personally, I completely agree with you, this is indeed a good addition to the current features of SharePoint. Thank you for bringing things to our attention. We sincerely recommend you go to SharePoint Feedback community to provide your feedback: SharePoint · Community (microsoft.com). This is the best platform to let related team hear from you and make the products and services better for you and others.
Thanks.
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