User Agent Provider not properly recognized

[AmberSparkDev]

I haven't gone into it in a lot of detail so there isn't much I can tell, but an external executable .jar was not able to find the proper UserAgentProvider, thus resulting in the authorization window never popping up.

A quick and easy hack is to explicitly set the UserAgentProvider with

System.getProperties().setProperty("userAgentProvider", "JavaFx");

I'm merely posting the issue here with the hope of saving someone else several hours of debugging. This issue occurred in a .jar artifact, but not in the IntelliJ IDE.