Instead of a transparent background it’s white. When exporting the photo to files and then importing it to Anki it works.
Please see [iPadOS] Image drag&drop malfunction
Thank you and sorry for not searching the topics beforehand.
No problem! Please let me know if you want to try the beta.
Thanks for the offer but I have found a workflow that works with files and I actually like it better than having my Anki pictures clogging up the photo library.