Desktop GUI wipes a session's message history on app restart after a provider stream failure

Description

While an open conversation is active, a provider stream failure (Model is unavailable from the configured model) is followed within ~1–2 seconds by the app tearing down all its instances and restarting. During that restart window, the session's entire message history is bulk-deleted. The user performed no delete action. The thread resets to start from the first message created after the restart.

This was initially misattributed to a UI "rename" action (the user had renamed the conversation around the same time), but event-log forensics show the deletions are bound to the restart — not the title change.

Plugins

@opencode-ai/plugin@1.18.22

OpenCode version

1.18.25

Steps to reproduce

1. Open a conversation with existing history.
2. Configure a model that can return Model is unavailable (e.g. via a flaky/upstream-gated model) and send a message.
3. Let the stream fail; observe the desktop app tear down and restart.
4. Re-open the conversation.
5. Observed: prior history is gone.

Screenshot and/or share link

https://opncd.ai/share/qHvTNmcb

Operating System

macOS 26.6(25G72)

Terminal

macOS native Terminal.app