xScheduledTask: test is always false

Details of the scenario you tried and the problem that is occurring:
Simply want to deploy 3 scheduled tasks.
I run Start-Dsc... and it works perfectly and creates scheduled tasks that work without issues.
However, when I run test, I receive False:

VERBOSE: [tst01sp16]: LCM:  [ Start  Resource ]  [[xScheduledTask]SiteCreationTask]
VERBOSE: [tst01sp16]: LCM:  [ Start  Test     ]  [[xScheduledTask]SiteCreationTask]
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteCreationTask] Testing scheduled task 'Mitt Skap Personal Site Creation' in '\'.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteCreationTask] Getting scheduled task 'Mitt Skap Personal Site Creation' in '\'.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteCreationTask] Task 'Mitt Skap Personal Site Creation' found in '\'. Retrieving settings, first action, first trigger and repetition settings.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteCreationTask] Detected schedule type 'Daily' for first trigger.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteCreationTask] Current scheduled task values retrieved.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteCreationTask] Testing DSC parameter state.
VERBOSE: [tst01sp16]: LCM:  [ End    Test     ]  [[xScheduledTask]SiteCreationTask] False in 2.4840 seconds.
VERBOSE: [tst01sp16]: LCM:  [ End    Resource ]  [[xScheduledTask]SiteCreationTask]
VERBOSE: [tst01sp16]: LCM:  [ Start  Resource ]  [[xScheduledTask]SiteProvisioningTask]
VERBOSE: [tst01sp16]: LCM:  [ Start  Test     ]  [[xScheduledTask]SiteProvisioningTask]
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteProvisioningTask] Testing scheduled task 'Mitt Skap Site Provisioning' in '\'.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteProvisioningTask] Getting scheduled task 'Mitt Skap Site Provisioning' in '\'.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteProvisioningTask] Task 'Mitt Skap Site Provisioning' found in '\'. Retrieving settings, first action, first trigger and repetition settings.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteProvisioningTask] Detected schedule type 'Daily' for first trigger.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteProvisioningTask] Current scheduled task values retrieved.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]SiteProvisioningTask] Testing DSC parameter state.
VERBOSE: [tst01sp16]: LCM:  [ End    Test     ]  [[xScheduledTask]SiteProvisioningTask] False in 0.5470 seconds.
VERBOSE: [tst01sp16]: LCM:  [ End    Resource ]  [[xScheduledTask]SiteProvisioningTask]
VERBOSE: [tst01sp16]: LCM:  [ Start  Resource ]  [[xScheduledTask]DatabaseDistributionTask]
VERBOSE: [tst01sp16]: LCM:  [ Start  Test     ]  [[xScheduledTask]DatabaseDistributionTask]
VERBOSE: [tst01sp16]:                            [[xScheduledTask]DatabaseDistributionTask] Testing scheduled task 'Mitt Skap DatabaseDistributing' in '\'.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]DatabaseDistributionTask] Getting scheduled task 'Mitt Skap DatabaseDistributing' in '\'.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]DatabaseDistributionTask] Task 'Mitt Skap DatabaseDistributing' found in '\'. Retrieving settings, first action, first trigger and repetition settings.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]DatabaseDistributionTask] Detected schedule type 'Daily' for first trigger.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]DatabaseDistributionTask] Current scheduled task values retrieved.
VERBOSE: [tst01sp16]:                            [[xScheduledTask]DatabaseDistributionTask] Testing DSC parameter state.
VERBOSE: [tst01sp16]: LCM:  [ End    Test     ]  [[xScheduledTask]DatabaseDistributionTask] False in 0.5320 seconds.
VERBOSE: [tst01sp16]: LCM:  [ End    Resource ]  [[xScheduledTask]DatabaseDistributionTask]

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

        xScheduledTask SiteCreationTask
        {
            TaskName                = 'Mitt Skap Personal Site Creation'
            ActionExecutable        = "C:\windows\system32\WindowsPowerShell\v1.0\powershell.exe"
            ActionArguments         = "-Command `"& '.\PersonalSiteCreation.ps1' -mysiteurl 'https://$siteCollectionHostNameMinerva/sites/my' -pathcsv '$mittSkapAccountsCsvUrl'`""
            ActionWorkingPath       = "$MittSkapLocalFolder"
            ScheduleType            = "Daily"
            StartTime               = "4:40"
            ExecuteAsCredential     = $SPBatchCredential
            RunLevel                = 'Highest'
            PsDscRunAsCredential    = $SPBatchCredential
        }

        xScheduledTask SiteProvisioningTask
        {
            TaskName                = 'Mitt Skap Site Provisioning'
            ActionExecutable        = "$MittSkapLocalFolder\MyCabinetJob\MyCabinet.Job.exe"
            ActionWorkingPath       = "$MittSkapLocalFolder\MyCabinetJob"
            ScheduleType            = "Daily"
            StartTime               = "5:00"
            ExecuteAsCredential     = $SPBatchCredential
            RunLevel                = 'Highest'
            PsDscRunAsCredential    = $SPBatchCredential
        }

        xScheduledTask DatabaseDistributionTask
        {
            TaskName                = "Mitt Skap DatabaseDistributing"
            ActionExecutable        = "C:\windows\system32\WindowsPowerShell\v1.0\powershell.exe"
            ActionArguments         = "-Command `"& '.\DistributingDatabases.ps1'`""
            ActionWorkingPath       = "$MittSkapLocalFolder\Logs"
            ScheduleType            = "Daily"
            StartTime               = "5:20"
            ExecuteAsCredential     = $SPBatchCredential
            RunLevel                = 'Highest'
            PsDscRunAsCredential    = $SPBatchCredential
        }

Version of the Operating System and PowerShell the DSC Target Node is running:
Win 2016, PS 5.1
Version of the DSC module you're using, or 'dev' if you're using current dev branch:
4.0.0.0

Start by reproducing the reported behavior on Windows Server 2016 with PowerShell 5.1 and ComputerManagementDsc 4.0.0.0, using the three scheduled-task configurations in the issue. Compare the resource's configuration and test results after deployment; done means Test returns true for all three tasks. No source file or test path is named.