Provisioning template for library with DocumentSet Contenttype: no longer inherits (shares) metadata

[Oegl]

Hi!

I have created a provisioning template of a library, containing a DocumentSet contenttype.
_Get-PnPSiteTemplate -out PnP_provisioningtemplate_Vertragsmanagement_ContractLibraryOnly.xml -Handlers Lists -ListsToExtract "VertragsbibliothekVorlage"

When I create the library with the provisioning template in another site....

Invoke-PnPSiteTemplate -Path PnP_provisioningtemplate_Vertragsmanagement_ContractLibraryOnly.xml

... the configured inheritance of metadata within the documentset contenttype no longer take action.

Am I doning something wrong? How can I re-enable the inheritance? I already tried to reset the "Shared columns" within the DocumentSet contentype - but did not solve the behavior.

Thanks for your help!

KR Martin