[bug] Adding a listener to a child window fires events from the parent window

[XuluWarrior]

Describe the bug

If I create a new window from a WebView and attach a listener to it, the events that the listener receives are actually from the parent window.
e.g. if I listen to tauri://move on the child window, the listener fires when the parent window moves.

Reproduction

1. Run this code in the WebView

  function createWindow() {
    const label = Math.random().toString();
    const webview = new WebviewWindow(label);
    windowMap[label] = webview;
    webview.once('tauri://error', function () {
      onMessage("Error creating new webview")
    });
    webview.listen('tauri://move', event => console.log(event));
  }

2. Move the child window
3. Nothing appears in the console logs
4. Move the parent window
5. Move events are logged in the console.

Expected behavior

I would expect to see the move events of the child window being logged to the console. Not those of the parent.

Platform and versions

tauri-apps/tauri@next 2b9e6ccc38836b27a3850faa697e845325a3866d

Operating System - Mac OS, version 11.6.2 X64

Node.js environment
  Node.js - 14.18.2
  @tauri-apps/cli - 1.0.0-beta.10
  @tauri-apps/api - 1.0.0-beta.8

Global packages
  npm - 6.14.15
  pnpm - Not installed
  yarn - 1.22.17

Rust environment
  rustc - 1.57.0
  cargo - 1.57.0

Rust environment
  rustup - 1.24.3
  rustc - 1.57.0
  cargo - 1.57.0
  toolchain - stable-x86_64-apple-darwin (default)

App directory structure
/dist
/node_modules
/public
/src-tauri
/src

App
  tauri.rs - 1.0.0-beta.8
  build-type - bundle
  CSP - default-src blob: data: filesystem: ws: wss: http: https: tauri: asset: customprotocol: 'unsafe-eval' 'unsafe-inline' 'self' img-src: 'self'
  distDir - ../dist
  devPath - http://localhost:5000/
  framework - Svelte

Stack trace

No response

Additional context

No response

[XuluWarrior]

I'm bumping this as it's a bit of a blocker for us.
You guys seem to be so on top of raised issues, I wondered if this one may just have been missed.

[FabianLars]

No we didn't miss it :) Our next branches are closed for over a week now in preparation for the audit changes. This together with us generally focusing on the first RC and the docs doesn't give us much time to triage issues :/

[XuluWarrior]

No worries.
It's good to see good progress on the stability of the codebase.