Auto check-in images on upload not working

Hi folks,

we're facing a weird issue. One of our authors has set up FrameMaker, along with Sharepoint integration, and everything's working as expected so far. But when he uploads an image into a folder (right click on folder in FM, select "Upload document", select and upload image file), it isn't checked in automatically. It remains checked out for him, he has to do a manual check-in. And when he references the image into a document, then tries to save and check-in said document, the image isn't checked in alongside.

On my end, I can then open the document, but get a grey image, until I check out the image manually, which fixes the issue. I can then check in the document again, and from that point, everything's working fine.

For clarification, when I upload images like that, and reference them into a document, it's all working as intended, with no manual corrections needed. Is there any setting we're missing, that needs to be toggled on our colleague's PC?

Thanks in advance! 🙏

Alex