Also the UI and layout left quite a bit to be desired. Mainly I didn't like how it just ran seemingly crashing in the background occasionally and I never had anyone to talk to one it.
There is a big difference needed when designing free software for individual productivity vs. social software where the usefulness depends upon other people using it and a lot of projects don't get past the cool prototype faze. Since they aren't likely to be seeking VC money to monetize it, then it will probably remain a cool demo for some time. At least the Signal people have tried to make a product that is fully usable by anyone who can install an app.