New-UDSelect Disabled option not working

PowerShell Universal Universal Dashboard
1 
Product: PowerShell Universal
Version: 1.4.6

New-UDSelect -Label Environment -Id environment -Option {
                "PROD", "UAT", "INTG", "TEST", "DEV" | % {
                    New-UDSelectOption -Name $_ -Value $_
                }
            } -DefaultValue $session:NewVMInfo.Environment -disabled

The issue i have is that the dropdown is not disabled. I cant seem to work out why.

Module version is 3.1.4