diff --git a/packages/dashboard/app/components/command-center/__tests__/CommandCenter.mobile-scroll.test.tsx b/packages/dashboard/app/components/command-center/__tests__/CommandCenter.mobile-scroll.test.tsx
index f2c7350700..864228ff15 100644
--- a/packages/dashboard/app/components/command-center/__tests__/CommandCenter.mobile-scroll.test.tsx
+++ b/packages/dashboard/app/components/command-center/__tests__/CommandCenter.mobile-scroll.test.tsx
@@ -368,6 +368,20 @@ async function openChartTab(tab: string) {
 
 describe("CommandCenter mobile scroll regression (FN-6595)", () => {
   beforeEach(() => {
+  /*
+  FNXC:CommandCenter 2026-07-30-22:10:
+  CLEAR THE PERSISTED SUB-TAB — cases in this file are no longer independent without it.
+
+  #2420 made `activeTab` initialise from per-project persisted state
+  (`getCommandCenterState(projectId)?.activeTab`) instead of always `"overview"`, because Command
+  Center unmounts on navigation by design and has to restore its sub-tab on remount. These cases
+  click through to other tabs, so the FIRST case now leaves `mission-control` persisted and every
+  later case renders `command-center-panel-mission-control` — the `command-center-panel-overview`
+  lookups then fail with no hint that the cause is a previous test.
+
+  Confirmed as ordering, not breakage: each failing case passes when run alone with `-t`.
+  */
+  localStorage.clear();
     apiMock.mockReset();
     mockOverviewApi();
     injectCommandCenterCss();
diff --git a/packages/dashboard/app/components/command-center/__tests__/CommandCenter.tablet-layout.test.tsx b/packages/dashboard/app/components/command-center/__tests__/CommandCenter.tablet-layout.test.tsx
index bc04bb4481..c9a661bfb2 100644
--- a/packages/dashboard/app/components/command-center/__tests__/CommandCenter.tablet-layout.test.tsx
+++ b/packages/dashboard/app/components/command-center/__tests__/CommandCenter.tablet-layout.test.tsx
@@ -391,6 +391,20 @@ async function openChartTab(tab: string) {
 
 describe("CommandCenter tablet layout regression (FN-6679)", () => {
   beforeEach(() => {
+  /*
+  FNXC:CommandCenter 2026-07-30-22:10:
+  CLEAR THE PERSISTED SUB-TAB — cases in this file are no longer independent without it.
+
+  #2420 made `activeTab` initialise from per-project persisted state
+  (`getCommandCenterState(projectId)?.activeTab`) instead of always `"overview"`, because Command
+  Center unmounts on navigation by design and has to restore its sub-tab on remount. These cases
+  click through to other tabs, so the FIRST case now leaves `mission-control` persisted and every
+  later case renders `command-center-panel-mission-control` — the `command-center-panel-overview`
+  lookups then fail with no hint that the cause is a previous test.
+
+  Confirmed as ordering, not breakage: each failing case passes when run alone with `-t`.
+  */
+  localStorage.clear();
     apiMock.mockReset();
     mockOverviewApi();
     injectCommandCenterCss();