Powershell runspace unexpected output (misunderstanding?) - powershell

Question

$ScriptBlock = {
Param (
$Vm,
$vc,
$session)
$VCenter = Connect-VIServer -Server $vc -session $session -force
$status = Get-VM $Vm
Write-host $status.Name
if ($status.PowerState -eq "PoweredOff")
{
$Clone = '_2.2'
$NewVM = $Vm + $Clone
Write-host $NewVM.Name
}
}
$Results = #()
$Throttle = 5 #threads
$sesssionstate = [System.Management.Automation.Runspaces.InitialSessionState]::CreateDefault()
$sesssionstate.ImportPSModule("Vmware.VimAutomation.Core")
$RunspacePool = [RunspaceFactory]::CreateRunspacePool(1, $Throttle, $sesssionstate, $host)
$RunspacePool.Open()
$Jobs = #()
$Vms = gc .\vmlist.txt
Foreach ($Vm in $Vms)
{
#Start-Sleep -Minutes 1
$Job = [powershell]::Create().AddScript($ScriptBlock).AddArgument($Vm).AddArgument($con.Name).AddArgument($con.SessionId)
$Job.RunspacePool = $RunspacePool
$Jobs += New-Object PSObject -Property #{
Job = $Job
Result = $Job.BeginInvoke()
}
}
while ($Jobs -Contains $false) {}
foreach($Job in $jobs)
{
$results += $Job.Job.EndInvoke($Job.Result)
$Job.Job.Dispose()
}
$results
Input File:
INTCLWK8
INTCLWK82
INTCLWK83
Output:
INTCLWK8
INTCLWK8_2.2
INTCLWK82
INTCLWK82_2.2
INTCLWK83
INTCLWK83_2.2
2nd run:
INTCLWK8
INTCLWK8_2.2
INTCLWK82_2.2
INTCLWK83
INTCLWK82
INTCLWK83_2.2
Why is the output different at run? This caused confusion to write multithread.
The output should be always like the below.
INTCLWK8
INTCLWK8_2.2
INTCLWK82
INTCLWK82_2.2
INTCLWK83
INTCLWK83_2.2