Tengwar keyboard issues [font/encoding related]

Hello. I recently installed Keyman’s Tengwar (Elvish) font, and every time I try and type with it those little box things come up where characters should be. I’ve tried re-tracing my steps and even downloading the keyboard again, but nothing seems to solve my problem. Anyone able to help?

Tengwar is not in unicode yet, but it is on the roadmap. Roadmap to the SMP

I think if you want to type with tengwar today, you need a special font installed on your app or system to use the custom codpoints. Look at the Fairfax for example: Fairfax HD