Unicode normalization error in Python 3.10

[ShengDong207]

I'm experiencing issues with Unicode normalization in Python 3.10.

When handling Unicode strings that contain combining characters or other characters that should be normalized, the normalization behavior appears to be inconsistent or incorrect.

This could potentially affect string comparisons, file operations, and other areas where Unicode normalization is important for correct behavior.

Additional details will be provided upon request.

[hugovk]

Please provide additional details. Give example code, the expected result and what you actually get. Give Python version numbers.

[hugovk]

Closing re: #134506 (comment).

[terryjreedy]

3.10 only gets security fixes. A normalization bug report should compare a specific statement about normalization in our docs with the behavior of specific code.