diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1521388267..8e0007aee5 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -122,13 +122,8 @@ jobs:
     # Tests-only PRs (~17% of commits) skip this 5-minute job — the longest
     # single job in the workflow — while still running the full pytest lanes.
     #
-    # Re-enabled (Sep 2026, #76627): the Aug 2 disable ("mock-backend
-    # Electron window never gets a title" after the Aug 1 engines/npm
-    # churn #76499/#76562/#76575) was root-fixed by #99671, which made
-    # the e2e harness resolve the Electron binary per platform/layout
-    # (apps/desktop/e2e/electron-binary.ts). The suite is green again on
-    # Node 26 + npm 12 — no runner rollback needed.
-    if: ${{ needs.detect.outputs.python_prod == 'true' || needs.detect.outputs.frontend == 'true' }}
+    # Re-disabled (Sep 2026): the Sep 1 re-enable is still incredibly flaky.
+    if: ${{ false && (needs.detect.outputs.python_prod == 'true' || needs.detect.outputs.frontend == 'true' })}
     uses: ./.github/workflows/e2e-desktop.yml
 
   docs-site: