SPOHomeSite: Returns 'Present' although no home site exists

[ghost]

Details of the scenario you tried and the problem that is occurring

SPOHomeSite returns 'Present' although no home site exists.
Because when no home site exists Get-PnPHomeSite returns an empty string.

PS> $homeSiteUrl = Get-PnPHomeSite
PS> $homeSiteUrl.length
0
PS> $homeSiteUrl.GetType().FullName
System.String

Verbose logs showing the problem

VERBOSE: [WIN]: LCM: [ Start Resource ] [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration]
VERBOSE: [WIN]: LCM: [ Start Test ] [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration]
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Testing configuration for home site collection
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Getting configuration for hub site collection
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Getting current home site collection settings
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Current Values: ApplicationId=***
ApplicationSecret=$null
CertificatePassword=$null
CertificatePath=***
CertificateThumbprint=***
Credential=$null
Ensure=Present
IsSingleInstance=Yes
Managedidentity=False
TenantId=***
Url=
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Target Values: ApplicationId=***
CertificateThumbprint=***
Ensure=Absent
IsSingleInstance=Yes
TenantId=***
Verbose=True
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Test-TargetResource returned False
VERBOSE: [WIN]: LCM: [ End Test ] [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] in 1.0140 seconds.
VERBOSE: [WIN]: LCM: [ Start Set ] [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration]
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Setting configuration for home site ''
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Getting configuration for hub site collection
VERBOSE: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] Getting current home site collection settings
WARNING: [WIN]: [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] There is currently not site collection set as a home site in your tenant.
VERBOSE: [WIN]: LCM: [ End Set ] [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration] in 0.8780 seconds.
VERBOSE: [WIN]: LCM: [ End Resource ] [[SPOHomeSite]SPOHomeSite::[SharePointOnline]Configuration]

Suggested solution to the issue

Change Get-TargetResource from this:

    if ($null -eq $homeSiteUrl)
    {
        ...
    }

to this:

    if ($homeSiteUrl -eq [String]::Empty)
    {
        ...
    }

The DSC configuration that is used to reproduce the issue (as detailed as possible)

    SPOHomeSite "SPOHomeSite" {
        Ensure                = "Absent"
        IsSingleInstance      = "Yes"
        ApplicationId         = $ApplicationId
        TenantId              = $TenantId
        CertificateThumbprint = $CertificateThumbprint
    }

The operating system the target node is running

OsName : Microsoft Windows 10 Pro
OsOperatingSystemSKU : 48
OsArchitecture : 64-bit
WindowsVersion : 2009
WindowsBuildLabEx : 19041.1.amd64fre.vb_release.191206-1406
OsLanguage : en-US
OsMuiLanguages : {en-US}

Version of the DSC module that was used ('dev' if using current dev branch)

1.23.809.1