I’ve been using Antigravity daily for almost two months now and I’m seeing this same issue, see the screenshot
Clearly I have chats from today, yesterday, and they are not showing up in the UI - you will see the UI showing me Chats from 17d and 19d ago - that is a real pain as I’m having to craft my own session handoff documents.
Thank you for bringing the issue with chat history loading to our attention. Our engineering team is currently investigating the matter, and we appreciate your patience as we work toward a resolution.