diff --git a/apps/web/src/components/chat/ErrorNotificationBar.test.tsx b/apps/web/src/components/chat/ErrorNotificationBar.test.tsx
index b23bc183..77338234 100644
--- a/apps/web/src/components/chat/ErrorNotificationBar.test.tsx
+++ b/apps/web/src/components/chat/ErrorNotificationBar.test.tsx
@@ -85,4 +85,73 @@ describe("ErrorNotificationBar", () => {
     expect(markup).toContain("Worktree thread could not start");
     expect(markup).toContain("Base branch 'main' does not resolve to a commit yet.");
   });
+
+  it("re-shows thread errors when the message changes after dismissal", async () => {
+    const onDismissThreadError = vi.fn();
+    let renderer: ReactTestRenderer | null = null;
+
+    await act(async () => {
+      renderer = create(
+        <ErrorNotificationBar
+          threadError={THREAD_ERROR}
+          showAuthFailuresAsErrors
+          showNotificationDetails={false}
+          includeDiagnosticsTipsInCopy={false}
+          providerStatus={null}
+          isMobileCompanion={false}
+          onDismissThreadError={onDismissThreadError}
+        />,
+      );
+    });
+
+    const dismissAll = renderer!.root.findByProps({ "aria-label": "Dismiss notifications" });
+    await act(async () => {
+      dismissAll.props.onClick();
+    });
+
+    expect(renderer!.toJSON()).toBeNull();
+
+    await act(async () => {
+      renderer!.update(
+        <ErrorNotificationBar
+          threadError="Codex CLI is not authenticated. Run `codex login` and try again."
+          showAuthFailuresAsErrors
+          showNotificationDetails={false}
+          includeDiagnosticsTipsInCopy={false}
+          providerStatus={null}
+          isMobileCompanion={false}
+          onDismissThreadError={onDismissThreadError}
+        />,
+      );
+    });
+
+    expect(renderer!.toJSON()).not.toBeNull();
+    expect(renderer!.root.findByProps({ "aria-label": "Show 1 notification" })).toBeTruthy();
+  });
+
+  it("does not hide non-dismissible provider notifications via dismiss all", async () => {
+    let renderer: ReactTestRenderer | null = null;
+
+    await act(async () => {
+      renderer = create(
+        <ErrorNotificationBar
+          threadError={null}
+          showAuthFailuresAsErrors
+          showNotificationDetails={false}
+          includeDiagnosticsTipsInCopy={false}
+          providerStatus={makeProviderStatus()}
+          isMobileCompanion={false}
+        />,
+      );
+    });
+
+    const dismissAll = renderer!.root.findByProps({ "aria-label": "Dismiss notifications" });
+    await act(async () => {
+      dismissAll.props.onClick();
+    });
+
+    expect(renderer!.toJSON()).not.toBeNull();
+    expect(renderer!.root.findByProps({ "aria-label": "Show 1 notification" })).toBeTruthy();
+    expect(JSON.stringify(renderer!.toJSON())).toContain("OpenAI (Codex CLI) needs verification");
+  });
 });
diff --git a/apps/web/src/components/chat/ErrorNotificationBar.tsx b/apps/web/src/components/chat/ErrorNotificationBar.tsx
index f8b9298d..b3bab3ad 100644
--- a/apps/web/src/components/chat/ErrorNotificationBar.tsx
+++ b/apps/web/src/components/chat/ErrorNotificationBar.tsx
@@ -54,6 +54,10 @@ interface NotificationItem {
   onDismiss?: () => void;
 }
 
+function buildThreadErrorNotificationId(error: string): string {
+  return `thread-error:${error}`;
+}
+
 export const ErrorNotificationBar = memo(function ErrorNotificationBar({
   threadError,
   showAuthFailuresAsErrors = true,
@@ -130,7 +134,7 @@ export const ErrorNotificationBar = memo(function ErrorNotificationBar({
       if (showAuthFailuresAsErrors || !isAuthenticationThreadError(threadError)) {
         const presentation = humanizeThreadError(threadError);
         items.push({
-          id: "thread-error",
+          id: buildThreadErrorNotificationId(threadError),
           kind: "thread-error",
           icon: CircleAlertIcon,
           title: presentation.title ?? "Error",
@@ -210,8 +214,8 @@ export const ErrorNotificationBar = memo(function ErrorNotificationBar({
         notif.onDismiss();
       }
     }
-    setDismissedIds(new Set(notifications.map((n) => n.id)));
-  }, [visibleNotifications, notifications]);
+    setDismissedIds(new Set(visibleNotifications.filter((n) => n.dismissible).map((n) => n.id)));
+  }, [visibleNotifications]);
 
   // Nothing to show
   if (visibleNotifications.length === 0) return null;