Hi @mchale,
Thanks for sharing the screenshots and confirming the details. Before we proceed further, could you please try switching back to Normal screen mode via View menu > Screen Mode > Normal and check if the pin annotations appear afterward? Please share a screenshot if possible.
Also, please check the response shared by another user on this thread and confirm if the behavior matches what you’re seeing on your end as well:
https://community.adobe.com/questions-671/indesign-review-isn-t-showing-highlights-or-pins-863112?postid=7558499#post7558499
If it appears to be the same issue, please be informed that this is already being checked further with the product team. Kindly allow me some time, and I’ll get back to you as soon as I have an update to share.
Thanks,
Abhishek