Thanks for inquiring Aspose.Slides.
I have worked with presentation file shared by you and have been able to reproduce the issue on my end when generating slide thumbnails using Aspose.Slides for Java 17.4 in MAC environment. An issue with ID SLIDESJAVA-36409 has been created in our issue tracking system to further investigate and resolve the issue. This thread has been linked with the issue so that you may be automatically notified once the issue will be fixed.
We are sorry for your inconvenience,
Any update on this issue. It would be helpful if you provide us with ETA
I have verified the issue status from our issue tracking system and regret to share that at present the issue is blocked owing to internal issue. I have requested our product team to share updates in this regard and will share them with you as soon as they will be shared by them.
The issues you have found earlier (filed as SLIDESJAVA-36409) have been fixed in this update.