We are aware of a regression in version 3.0.5 of Event Store’s Projection UI (Empty Projections List). The issue will be resolved in the upcoming 3.0.6 version.
If you replace your UI with the one from the 3.0.2 branch from the EventStore.UI repository (https://github.com/EventStore/EventStore.UI/tree/oss-v3.0.2) it should come back to life.