Powershell on Windows 2019 doesn't wait for a statement - powershell

Question

I've created a powershell script to prepare server disks some years ago and it was functioning all the time, but now using Windows 2019 I got a problem. This part of the script
#$disk_list = (Get-Disk | where { ($_.OperationalStatus -eq "Offline") -and ($_.IsClustered -eq $False) })
if ($disk_list)
{
Write-Host "$($disk_list.count) disks with partition style RAW are found" -ForegroundColor Green
$overview_disks = [pscustomobject]#{ }
foreach ($d in $disk_list)
{
$LUN = Get-WmiObject Win32_DiskDrive | where { ($_.InterfaceType -eq "SCSI") -and ($_.index -eq $d.Number) } | select Name, SCSILogicalUnit, Size
$overview_disks | Add-Member -Name $LUN.Name -Value $("`tLUN:" + $LUN.SCSILogicalUnit + " `tDiskID: " + $d.Number + " `tSize: " + $([math]::Round($LUN.Size /1GB, 1)) + "GB") -MemberType NoteProperty
}
$overview_disks
doesn't work anymore, delivering an empty object $overview_disks.
I got it functioning using Measure-Command:
$disk_list = (Get-Disk | where { ($_.OperationalStatus -eq "Offline") -and ($_.PartitionStyle -eq "RAW") })
#$disk_list = (Get-Disk | where { ($_.OperationalStatus -eq "Offline") -and ($_.IsClustered -eq $False) })
if ($disk_list)
{
Write-Host "$($disk_list.count) disks with partition style RAW are found" -ForegroundColor Green
$overview_disks = [pscustomobject]#{ }
foreach ($d in $disk_list)
{
Measure-Command -Expression { $LUN = Get-WmiObject Win32_DiskDrive | where { ($_.InterfaceType -eq "SCSI") -and ($_.index -eq $d.Number) } | select Name, SCSILogicalUnit, Size}
$overview_disks | Add-Member -Name $LUN.Name -Value $("`tLUN:" + $LUN.SCSILogicalUnit + " `tDiskID: " + $d.Number + " `tSize: " + $([math]::Round($LUN.Size /1GB, 1)) + "GB") -MemberType NoteProperty
}
$overview_disks
Measure-Command lets $LUN= part to wait till it finishes.
I've searched a lot, but there is no information why it doesn't wait in a standard syntax of the script as it was the case for Windows 2012 and 2016.
Do one of you have an idea?