Uploading files to scripts from Portal hangs at waiting for feedback

Related to the issue in Issues with scripts that take files as input and run as gMSA - Devolutions Forum I have a role required to run the script, if my coworker who only has "MyRole", they can start the script and upload it, but in the admin console the job sits at "Awaiting user feedback". Opening the job reveals that it is expecting File (as a string).

Considering it works for me as an Administrator, but not for the user who only has MyRole, I assume it's some kind of permissions related issue, but I don't think it should be? Correct me if I'm wrong.

Details are the same as before, my running environment is:

OS: Windows Server 2022
PowerShell Universal: Version 2026.2.5
PSU runs as a Windows Service as LocalSystem

Script is:

#.universal\scripts.ps1 (Sanitized):

New-PSUScript -Name 'Test.ps1' -Description 'Test' -Path 'Test.ps1' -Environment 'PowerShell 7' -Credential 'MyGmsaAccount' -Role @('MyRole') -PortalOutputType 'Text' -Icon 'alert' -DisplayOutputOnExecute -ExecutionRole @('MyRole') 

# Script contents
Param(
    [ComponentModel.DisplayName("Upload File")]
    [File]$File
)
'Filename is {0}' -f $File.FileName

Set-Content -Path 'C:\test.xlsx' -AsByteStream -Value $File.Content

The role they're using is this specific one:

New-PSURole -Name "MyRole" -ClaimType "http://schemas.microsoft.com/ws/2008/06/identity/claims/groups" -ClaimValue "MyRole"