Invoke-PnPSiteTemplate does not provision webparts to classic site Homepage.aspx

[rockraider213]

When I try to provision webparts to the Homepage.aspx, the Homepage is empty after applying the template.
Even the trace log says nothing about any errors.
The webparts are about showing the task list, a contact list, and some list entries from another list (injected from a tiny javascript).

The weird thing is that on one site it was successfully but past and post sites does not work.

01.07.2024: provisiong worked
02.07.2024: provisioning does not worked
10.07.2024: provisioning does not worked
11.07.2024: provisioning worked

Steps to reproduce:

1. Invoke-PnPSiteTemplate -Path $env:TEMP"\ProjectWebTemplate.xml" -Parameters @{"ApplicationUrl" = $global:applicationUrl; "ApplicationUrlRelative" = $global:applicationUrlRelative; "ProjectID" = $project.FieldValues[$global:FIELD_NAME_SharePointID] } -ClearNavigation -Handlers Lists, Navigation, Pages, PageContents
2. Invoke-PnPSiteTemplate -Path $env:TEMP"\Project_Landingpage.xml" -Parameters @{"ApplicationUrl" = $global:applicationUrl; "ApplicationUrlRelative" = $global:applicationUrlRelative; }
3. Tracelog writes templates applied - everything fine
4. Homepage.aspx is modified but it is empty and no webparts were not provisioned

Environment:
PnP.Powershell Version 2.5.0
Powershell 5.1 in Azure Runbook

Hopefully someone has an idea what I could try to solve it.
And might it be usefull to also contact Microsofr Support in this case?

KR