Javacript communication does not work for WEB support even if in same Origin Frame

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[x] I have already searched for the same problem

Environment

Technology	Version
Flutter version	3.10.2
Plugin version	6.0.23
Android version
iOS version
macOS version
Xcode version
Web brower	chrome

Device information:

Description

Creating a web application target, I test the JavaScript communication sample code provided in documentation [https://inappwebview.dev/docs/webview/javascript/communication/#JavaScript-Handlers]

To be compliant with same origin frame constraint, I put the HTML content + script file in the same domain and initiate the browser to this "same domain" page I have tested and validated the "same origin policy" by executing a this basic code:

var result = await controller.evaluateJavascript(source: "1 + 1"); print("===>Result: $result");

I get this error from the console:


An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.
web_support.js:194 TypeError: Failed to execute 'observe' on 'MutationObserver': parameter 1 is not of type 'Node'.
    at HTMLIFrameElement.<anonymous> (web_support.js:150:32)

Expected behavior: Sample code provided without any error

Current behavior: Error returned in console

Steps to reproduce

This
Than that
Then

Images

Stacktrace/Logcat

Adding addJavaScriptHandler test.html:1 An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing. web_support.js:194 TypeError: Failed to execute 'observe' on 'MutationObserver': parameter 1 is not of type 'Node'. at HTMLIFrameElement. (web_support.js:150:32)

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pichillilorenzo / flutter_inappwebview