[Bug]: Capacitor on Android detected as web platform when server.url contains fragment on WebViews that support DOCUMENT_START_SCRIPT

[hbordersTwitch]

Capacitor Version

[warn] The bundledWebRuntime configuration option has been deprecated. Can be safely deleted.
💊   Capacitor Doctor  💊 

Latest Dependencies:

  @capacitor/cli: 6.1.1
  @capacitor/core: 6.1.1
  @capacitor/android: 6.1.1
  @capacitor/ios: 6.1.1

Installed Dependencies:

  @capacitor/cli: 6.1.1
  @capacitor/ios: 6.1.1
  @capacitor/android: 6.1.1
  @capacitor/core: 6.1.1

[success] iOS looking great! 👌
[success] Android looking great! 👌

Other API Details

$ npm --version
10.7.0
$ node --version
v22.2.0
$ pod --version
1.15.2

Platforms Affected

• iOS
• Android
• Web

Current Behavior

When I run capacitor with a server.url that includes a url fragment (https://example.com#foo) on an API 34 Android emulator (or any emulator that supports WebViewFeature.DOCUMENT_START_SCRIPT), Capacitor detects the runtime as web. I can open the WebView in the Chrome Inspector, and run the following in the console:

> Capacitor.platform
<- 'web'

If I remove the fragment from the server.url (https://example.com), then everything works fine. I can open the WebView in the Chrome Inspector, and run the following in the console:

> Capacitor.platform
<- 'android'

Expected Behavior

When I run capacitor with a server.url that includes a url fragment (https://example.com#foo) on an API 34 Android emulator (or any emulator that supports WebViewFeature.DOCUMENT_START_SCRIPT), Capacitor detects the runtime as android, and all plugins work normally.

Project Reproduction

https://github.com/hbordersTwitch/capacitor-server-url-fragment-bug

• main shows a server.url without a fragment and things working normally
• server_url_fragment_demo shows a server.url with a fragment and only a / path, which demonstrates the bug on if (appUri.getPath().equals("/")) { path of Bridge.java
• server_url_fragment_demo_2 shows a server.url with a fragment and a non-/ path, which demonstrates the bug on the else (appUri.getPath().equals("/")) { path of Bridge.java

Additional Information

#7454 is related because it involves allowedOrigin rules.

This bug is worse when server.url contains a path (https://example.com/#foo) or a port (https://example.com:8443#foo) because addDocumentStartJavaScript throws an exception in those cases.

[ionitron-bot]

This issue has been labeled as type: bug. This label is added to issues that that have been reproduced and are being tracked in our internal issue tracker.

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Capacitor, please create a new issue and ensure the template is fully filled out.