Get-AzResource returns wrong PrincipalId for Function App Staging Slot

[WouterSlob]

#12026 Description
When using Get-AzResource to get the staging slot of a Function App a resource is returned which has a wrong PrincipalId (in .Identity.PrincipalId). The returned PrincipalId is the principalId of the Function App itself and not the Function App.

For web apps with staging slots the proper principalIds are returned.
When using Get-AzWebApp and Get-AzWebAppSlot also the proper principalIds are returned.

Steps to reproduce

Create a Function App with a staging slot and system identities.

$rg = "resoucegroupname"
$functionApp = "functionappname"
$functionAppStagingSlot = "functionappstagingslotname"
foreach($r in (Get-AzResource -ResourceGroupName $rg -ResourceType "Microsoft.Web/sites")) { 
    Write-Host $r.ResourceName $r.Identity.PrincipalId
}
foreach($r in (Get-AzResource -ResourceGroupName $rg -ResourceType "Microsoft.Web/sites/slots")) { 
    Write-Host $r.ResourceName $r.Identity.PrincipalId
}

Environment data

Windows 10 / Powershell 5.1

Module versions

Az.Resources, version 2.1.0

[dingmeng-xue]

Thanks for reporting. Please find a specific resource and share us debug output when executing Get-AzResource

[dingmeng-xue]

@WouterSlob , could you please try to find the problem resource and share us the debug message? Get-AzResource is cmdlet on all resource but result may different according resource type.

[WouterSlob]

Unable to reproduce anymore.