Topmost pixels of Big PNG object gets black using insert_image() function

[LasseStaeglichPP]

Description of the bug

When using PyMuPDF's insert_image function to insert a transparent PNG into a PDF, certain areas of the image (notably the topmost pixels) appear as solid black in the generated PDF. This issue is most noticeable in large PNG images (~300 DPI, dimensions such as 56 cm x 100 cm)
I tried the insert_image() function with the Image parameter as a File, Pixmap and stream. All had the same result

Here the resulting PDF file:
23511_1_No.pdf
Screenshot of the PNG wihtout the issue

Screenshot of the PDF with the issue

The PNG was sadly to big for uploading so i here is a wetransfer link:
https://we.tl/t-1VdSrVImwP

How to reproduce the bug

use insert_image() function with a large PNG with transparency and semi transparency

PyMuPDF version

1.24.12

Operating system

Windows

Python version

3.12