Issue with File Upload in Firefox 138 on Windows 11 – Full Window Freeze

nextkara — Tue, 27 May 2025 02:02:18 GMT

I am experiencing a full window freeze when uploading files using Firefox 138 on Windows 11, making the browser unresponsive and preventing mouse interaction. This issue does not occur when performing the same action in other browsers. Attached is the analysis report url

— please help identify the root cause.

This is a test html file,

<!DOCTYPE html>

<head>

<title>upload</title>

<style>

body {

font-family: Arial, sans-serif;

display: flex;

justify-content: center;

align-items: center;

height: 100vh;

background-color: #f4f4f9;

}

.upload-container {

text-align: center;

background-color: white;

padding: 20px;

border-radius: 8px;

box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);

}

input[type="file"] {

margin-top: 10px;

}

#fileName {

margin-top: 10px;

font-size: 16px;

color: #333;

}

</style>

</head>

<body>

<h2>upload file</h2>

</div>

document.getElementById('fileInput').addEventListener('change', function(event) {

const file = event.target.files[0];

if (file) {

document.getElementById('fileName').textContent = 'selected: ' + file.name;

} else {

document.getElementById('fileName').textContent = '';

}

});

</script>

</body>

</html>

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Issue with File Upload in Firefox 138 on Windows 11 – Full Window Freeze