Lifecycle

When you press Play, Loom starts up and loads your UI automatically. The bridge is live as soon as the UI page renders — state pushes, action calls, and events all flow from that point.

On Stop

When you exit Play mode, the bridge disposes and any C# event subscriptions are released. The Vite dev server keeps running between Play sessions for fast restart; restart it manually with Loom → Restart Dev Server if it misbehaves.

On Editor restart

After installing or upgrading the Loom Unity package, fully restart Unity. Closing and reopening the scene is not enough — you must restart the Editor.

In player builds

The Vite dev server is editor-only. In player builds, the UI is loaded from Application.streamingAssetsPath/Loom/index.html, which Vite’s production build emits.