Hi @TaylorRiles
This is actually the default max open tabs limit. Cursor defaults to 5 simultaneous chat tabs, and when you create a new one at the cap, the least recently used tab is automatically closed. The chats aren’t lost – you can restore them from your chat history.
You can change this limit right now: go to Cursor Settings → Agents → Max Tab Count and set it to 10, Unlimited, or a Custom value.
Additionally, if you enable “Open chat as editor tabs” under Cursor Settings → General → Layout, your tabs will persist better across restarts.
A related thread with more details: Chat tabs dissapearing