afphoto - export as cmyk pdf file is corrupted when reopened

[Steve F]

using Mac Studio M1 Max - macos 13.6.7 - Affinity suite 2.3.1

When attempting to export pixel cmyk afphoto files as a pdf they are always corrupted when reopened. Some section of the image is always corrupted (see example). Rgb files have no problem when exported as a pdf. The issue occurs with both hi-res and lo-res images and occurs with both layers intact and flattened. All work is created natively in afphoto - no import or placed files. I am selecting U.S. web coated (swop) v2 when converting document profile to cmyk from original rgb. A screenshot of the export setting is provided here. I have tried a number of combinations including selecting older pdf versions but there are too many possibilities to try every possible combination of settings.
The top area of the second image is the corrupted section.

Am I missing something simple here or is this an afphoto glitch, and if so is there a workaround?

Thanks! 

 

[NotMyFault]

Hi,

What gets corrupted, the exported PDF or the afphoto file?
can you upload the afphoto file?
 

please always the full application window when making screenshots, so we can see which app is used and important panels like layer, transform, navigator panel.

A possible cause is HW acceleration in performance settings. Please try to deactivate, restart the app and export again.

[Steve F]

Thanks so much NotMyFault 
Unchecking Hardware Acceleration appears to have resolved the issue.

To answer your question, the exported cmyk pdf was always corrupted in some way. The original afphoto file was never harmed.