Microsoft.Common.Slider does not work with sideload-createuidef.sh

Question

Testing createUIDefinition.json with https://github.com/Azure/azure-quickstart-templates/blob/master/sideload-createuidef.sh

The Microsoft.Common.Slider UI component does not seem to work at all.

https://learn.microsoft.com/en-us/azure/azure-resource-manager/managed-applications/microsoft-common-slider

When included in createUIDefinition.json, it is completely ignored. Even the Azure JSON plugin for Visual Studio Code does not recognize the element.

The Slider works fine when testing via Create UI Definition Sandbox.