Shadow on the QR code when printing

Hi
one of our customers always has a shadow in the code when printing the QR code.
Settings have already been analyzed. Does anyone of you have experience with this issue?

Attached the screenshot of the QR code and the log files.

log_1.pdf (116.9 KB)
Log_2.pdf (119.6 KB)
QRCode.pdf (24.3 KB)

Best
Ricardo

@Legambo Could you please attach your input document along with code that will allow us to reproduce the problem? We will check the issue and provide you more information.