Editor UI for godex not working

No ECS tab in editor from the latest master from previous version:
Unable to add systems or change their order in "Pipeline view"
Unable to find any custom system in "Add system" window, opened by the button "Use feature"
No input reaction for buttons "New component" and "Add variable" in "Component and Databag manager" window, opened by the "Use feature" button
Unable to find any custom component in the "Component and Databag manager" window

GodotECS / godex