Invoke-PSUScript DontShow Parameters

Hi,
I've noticed the following behaviour when using DontShow as a parameter definition in scripts

example:
param(
[Parameter()]
$Test,
[Parameter(DontShow)]
$Test2
)

When running the script in the GUI 'Test2' does not show, which is expected and correct.
However, When using the following command in another script:

This works:
Invoke-PSUScript -Script "HelloWorld.ps1" -Integrated -Parameters @{Test="testString"}
This fails:
Invoke-PSUScript -Script "HelloWorld.ps1" -Integrated -Parameters @{Test="testString";Test2="asdsad"}

The error message is:
Unknown parameter Test2. Parameters for this script are Test

Expected behaviour for me is that DontShow is reflected in the admin menu run script popup, but still available as a parameter via Invoke-PSUScript. Is this a bug or is this intentional behaviour?

Thanks,
Tom