Display file properties dialog / Unexpected Qt warning without using Qt - qt

Question

Trying to display a file properties dialog programmatically in Windows 10, I first tried specifying the "properties" verb in a call to ShellExecute from VBScript. This produced a baffling warning:
Qt: Untested Windows version 10.0 detected!
I haven't installed Qt on this machine, and this is produced from somewhere in the innards of the Windows script support and/or even the API level, where evidently there is a Qt hook installed.
Next, I tried another angle, using the Shell scripting object to invoke the "properties" verb. No ShellExecute here. But same result, except that now it also happens (not entirely reproducable) that I get this error box:
Code:
option explicit
dim fs: set fs = CreateObject("Scripting.FileSystemObject")
sub writeline( s )
WScript.StdOut.WriteLine s
end sub
dim fArg: fArg = WScript.Arguments.Item( 0 )
dim itemPath: itemPath = fs.GetAbsolutePathName( fArg )
dim itemFolderPath: itemfolderpath = fs.GetParentFolderName( itemPath )
dim itemName: itemName = fs.GetFileName( itemPath )
writeline itemPath
writeline itemFolderPath
writeline itemName
dim winShell: set winShell = CreateObject( "Shell.Application" )
dim folder: set folder = winShell.NameSpace( itemFolderPath )
writeline "Folder title: " & folder.title
dim item: set item = folder.Items.Item( itemName )
writeline "Item name: " & item.Name
dim verbs: set verbs = item.Verbs ' !Produces Qt warning.
writeline "--------------------------------------------"
writeline verbs.Count & " verbs:"
dim propertiesVerb : set propertiesVerb = Nothing
dim verb: dim verbName
for each verb in verbs
verbName = verb.Name
writeline " -> " & verb.Name
if UCase( Replace( verbName, "&", "" ) ) = "PROPERTIES" then
set propertiesVerb = verb
end if
next
if propertiesVerb is Nothing then
writeline "!Properties verb not found"
else
writeline "Displaying properties dialog..."
propertiesVerb.DoIt
end if
The baffling Qt warning, indicating a Qt hook somewhere in Windows, is produced by the so commented line, which just invokes the Verbs property on a folder item (scripting object).
I want to do this, display the properties dialog for a specified file, entirely in scripting, not at the Windows API level via e.g. C++ or C# which I suspect would just work.
Update:
By just adding
WScript.Sleep 200
after the invocation of the verb item, the dialog now shows. However, the Qt warning is there still. I don't want that.