Not generating correct stubs for cv2 module

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When using the command pyright.createtypestub to generate stub for cv2 module incomplete/wrong __init__.pyi file generated. It works perfectly fine for numpy and other modules.

Am I doing something wrong or is this a problem with the cv2 module. For now a temporary solution seems to manually generate the stubs with stubgen command.

The __init__.pyi that was generated:

"""
This type stub file was generated by pyright.
"""

"""
This type stub file was generated by pyright.
"""
@<Expression>
class :
   ...

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This seems to be a pyright issue.