Invoke-PnPSiteTemplate fails with "The property or field 'HeaderLayout' has not been initialized"

Hello,

when I export a site template via the "Get-PnPSiteTemplate -IncludeAllClientSidePages -PersistBrandingFiles -PersistPublishingFiles" command and then try to invoke it on another site the issue occurs.

Invoke-PnPSiteTemplate : The property or field 'HeaderLayout' has not been initialized. It has not been requested or the request has not been executed. It may need to be explicitly requested. At line:1 char:1 Invoke-PnPSiteTemplate -Path C:\Temp\spo\PNP2\PnpTemplate.xml -ClearN ... CategoryInfo : WriteError: (:) [Invoke-PnPSiteTemplate], PropertyOrFieldNotInitializedException FullyQualifiedErrorId : EXCEPTION,PnP.PowerShell.Commands.Provisioning.Site.InvokeSiteTemplate

I tried the nighly builds to export a "extended" header. So the header section in the export looks like this:
<pnp:Header Layout="Extended" MenuStyle="MegaMenu" BackgroundEmphasis="Strong" ShowSiteTitle="false" ShowSiteNavigation="false" />

I was able to reproduce it in 1.8.62 abd 1.8.61. I am trying with SharePoint Online modern sites

Reproduce the failure by exporting with Get-PnPSiteTemplate using the shown switches, then invoking the resulting PnpTemplate.xml with Invoke-PnPSiteTemplate. Trace how the exported pnp:Header element and its HeaderLayout property are handled; done means the template invokes successfully on another SharePoint Online modern site.