[Bug]: UI Mode restart doesn't restart server with reuseExistingServer: false

[karlhorky]

Version

1.46.0

Steps to reproduce

1. Make sure you have reuseExistingServer: false configured (this is the default if unconfigured in playwright.config.ts)

2. Start Playwright UI Mode with playwright test --ui

3. Wait for server to start

4. Click on the "Reload" button (screenshot below)
   

5. Click on the "Toggle Output" button (screenshot below)
   

6. Observe the "already used" error message(s)

   $ NODE_ENV=test yarn start
   [WebServer] Listening at http://localhost:3000
   warning package.json: No license field
   $ NODE_ENV=test yarn start
   warning package.json: No license field
   [WebServer] Listening at http://localhost:3010
   [WebServer] GET /icons/icon-48x48.png?v=dad84ffd6565cb5f517328c25c456b99 302 3.466 ms - 28
   [WebServer] GET /login 200 2.570 ms - 460184
   
   Error: http://localhost:3000 is already used, make sure that nothing is running on the port/url or set reuseExistingServer:true in config.webServer.
   
   Error: http://localhost:3000 is already used, make sure that nothing is running on the port/url or set reuseExistingServer:true in config.webServer.
   

   

Alternative step 4 (after macOS system sleep):

4. Sleep the macOS system (apple menu -> Sleep) and re-wake. Click on "Reload the page" link in the "UI Mode disconnected" screen:
   

Expected behavior

Servers are also restarted when clicking on "Reload" button or "Reload the page" if reuseExistingServer: false

Actual behavior

Servers are not restarted when clicking on "Reload" button or "Reload the page" if reuseExistingServer: false, leading to "already used" errors described above

Additional context

No response

Environment

System:
    OS: macOS 14.6.1
    CPU: (8) arm64 Apple M1
    Memory: 70.97 MB / 16.00 GB
  Binaries:
    Node: 20.15.0 - /opt/homebrew/bin/node
    Yarn: 1.22.22 - /opt/homebrew/bin/yarn
    npm: 10.7.0 - /opt/homebrew/bin/npm
    bun: 1.1.21 - /opt/homebrew/bin/bun
  IDEs:
    VSCode: 1.92.1 - /opt/homebrew/bin/code
  Languages:
    Bash: 5.2.0 - /opt/homebrew/bin/bash

[karlhorky]

Thanks for #32263 🙌

I can confirm that @playwright/test@1.47.0 no longer has the buggy behavior 🎉