image issue in dark mode (ios version)

whf

I just checked webDAV on ipad and it looks good. But I found another issue about image appearance in dark mode. It seems zotero simply reverse color of pdf file. It works fine for characters since characters are all black in light mode. But images look weird in this case. Please see the comparison in this link.

https://cdn.jsdelivr.net/gh/hengfei-wang/couldimages/img/20211118103115.pdf