processing() only works with English prompts

[Arxing]

Describe the bug

The following code works fine,

void main() async {
  final loading = processing('loading...');
  await Future.delayed(const Duration(milliseconds: 2000));
  loading.success('ok');
}

However, when the prompt contains Chinese, Japanese, or other non-English characters, I get the following output:

Screenshots
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Desktop (please complete the following information):

• OS: Windows 11

Additional context
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