PowerShell script ignores files with <whitespace>H - powershell

Question

I inherited this script from my precursor, which is supposed to copy a bunch of files from one location into a JFrog Artifactory.
It workes fine except for files with followed by an H in the name.
For example Test My Client.exe will be copied correctly but Test My Host.exe will be ignored by the script.
Anybody has an idea what the reason for this strange behaviour is?
param
(
[string]$RootPath="D:\_temp\upload\",
[string]$Repo="repo-snapshot",
[string]$Product="SEARCHER",
[string]$Version="1.23.45678.9012",
[string]$ArtifactoryRoot
)
$AF_USER = "myUser"
$AF_PWD = "pA55VVoRd" #ConvertTo-SecureString "pA55VVoRd" -AsPlainText -Force
$CREDS = New-Object System.Management.Automation.PSCredential ($AF_USER, $AF_PWD)
$MajorMinor = $Version.Split('.')[0] + "." + $Version.Split('.')[1]
$BuildRevision = $Version.Split('.')[2] + "." + $Version.Split('.')[3]
$uri = "https://artifactory.test.com/artifactory/$Repo/TEST/$Product/$MajorMinor/$BuildRevision/$ArtifactoryRoot/"
$curl = "$PSScriptRoot\..\..\bin\ReleaseU\curl.exe"
Write-Host $MajorMinor
write-host $BuildRevision
$filesToUpload = Get-ChildItem $RootPath -Recurse -File
foreach($file in $filesToUpload)
{
$artifactoryAddPath = $file.FullName.Remove(0,$RootPath.Length).Replace('\','/')
$completeUrl = $uri+$artifactoryAddPath
write-host $completeUrl
$FileSize = (Get-Item $file.FullName).Length /1MB
Write-Host "Filesize: "$FileSize" MB"
$preTime = Get-Date
write-host "$curl --user $AF_USER`:$AF_PWD --upload-file " $file.FullName "$completeUrl --insecure"
. $curl --user $AF_USER`:$AF_PWD --upload-file $file.FullName $completeUrl --insecure
$postTime = Get-Date
Write-Host "Upload finished"
$timeDiff = $postTime - $preTime
$avgSpeed = $FileSize / $timeDiff.TotalSeconds
Write-Host -Object ("Upload speed is: {0:N2}MB/sec" -f ($avgSpeed));
}