SqlSetup: If UpdateSource is set to a value and UpdateEnabled is set to 'False' the setup fails

Details of the scenario you try and problem that is occurring:
If parameter UpdateSource is set to a value and UpdateEnabled is set to 'False' then the setup fails without an error. The setup ends quickly without an error, and after htat the resource reports from the Test-method that no features was found and the resource errors out.

The DSC configuration that is using the resource (as detailed as possible):

xSQLServerSetup $resourceConfigName
{
    InstanceName = $Node."$($currentSqlInstance)InstanceName"
    Features = $Node."$($currentSqlInstance)InstallFeatures"
    BrowserSvcStartupType = 'Automatic'
    SQLCollation = 'Finnish_Swedish_CI_AS'
    SQLSvcAccount = $SqlServiceCredential
    AgtSvcAccount = $SqlAgentServiceCredential
    #ASSvcAccount = $SqlServiceCredential
    SQLSysAdminAccounts = 'COMPANY\SQLAdmins', $SqlAdministratorCredential.UserName
    SetupCredential = $SqlInstallCredential

    SourcePath = $Node."SourcePath$($currentSqlInstance)"
    SourceCredential = $SqlInstallCredential

    UpdateEnabled = 'False'
    UpdateSource = '.\Updates'

    SuppressReboot = $false
    ForceReboot = $false

    DependsOn = '[WindowsFeature]NetFramework45'
}

Version of the Operating System, SQL Server and PowerShell the DSC Target Node is running:
Windows Server 2012, SQL Server 2016, WMF 5.0

Version of the DSC module you're using, or 'dev' if you're using current dev branch:
Dev

Start with the xSQLServerSetup resource and reproduce the supplied DSC configuration using UpdateSource set to .\Updates and UpdateEnabled set to 'False'. Trace why setup exits without an error, then verify that setup completes successfully and the Test method detects the installed features.