diff --git a/packages/dashboard/src/routes/register-chat-routes.ts b/packages/dashboard/src/routes/register-chat-routes.ts
index c2e7f20c9..1f3d26ea3 100644
--- a/packages/dashboard/src/routes/register-chat-routes.ts
+++ b/packages/dashboard/src/routes/register-chat-routes.ts
@@ -560,15 +560,6 @@ export function registerChatRoutes(ctx: ApiRoutesContext, deps: ChatRouteDeps):
       // Handle client disconnect
       req.on("close", () => {
         unsubscribe();
-        // If the response hasn't been ended (i.e. the generation was still
-        // streaming when the browser disconnected — tab close, navigation,
-        // network drop), cancel the agent so it doesn't keep running with
-        // nobody listening. Otherwise the next request for this session sees a
-        // stale `activeGenerations` entry and races against the lingering
-        // agent for the same CLI session file.
-        if (!res.writableEnded) {
-          chatManager.cancelGeneration(sessionId);
-        }
       });
 
       // Send heartbeat every 30s to keep connection alive