diff --git a/src/main/workers/team-fs-worker.ts b/src/main/workers/team-fs-worker.ts
index 60362205..e88290de 100644
--- a/src/main/workers/team-fs-worker.ts
+++ b/src/main/workers/team-fs-worker.ts
@@ -352,6 +352,14 @@ function cloneCached<T>(value: T): T {
     : (JSON.parse(JSON.stringify(value)) as T);
 }
 
+function dateFromFingerprintMs(ms: unknown): Date | null {
+  if (typeof ms !== 'number' || !Number.isFinite(ms) || ms <= 0) {
+    return null;
+  }
+  const date = new Date(ms);
+  return Number.isFinite(date.getTime()) ? date : null;
+}
+
 async function statPathFingerprint(filePath: string): Promise<PathFingerprint> {
   try {
     const stat = await fs.promises.stat(filePath, { bigint: true });
@@ -1460,7 +1468,6 @@ async function readTasksDirForTeam(
       }
       taskDiag.cacheMisses++;
 
-      const stat = await fs.promises.stat(taskPath);
       const raw = await readFileUtf8WithTimeout(taskPath, payload.maxTaskReadMs);
       const parsed = JSON.parse(raw) as ParsedTask;
       const metadata = parsed.metadata;
@@ -1504,11 +1511,12 @@ async function readTasksDirForTeam(
         typeof parsed.createdAt === 'string' ? parsed.createdAt : undefined;
       let updatedAt: string | undefined;
       try {
+        const birthtime = dateFromFingerprintMs(pathFingerprint.birthtimeMs);
+        const mtime = dateFromFingerprintMs(pathFingerprint.mtimeMs);
         if (!createdAt) {
-          const bt = stat.birthtime.getTime();
-          createdAt = (bt > 0 ? stat.birthtime : stat.mtime).toISOString();
+          createdAt = (birthtime ?? mtime)?.toISOString();
         }
-        updatedAt = stat.mtime.toISOString();
+        updatedAt = mtime?.toISOString();
       } catch {
         /* ignore */
       }
@@ -1559,7 +1567,7 @@ async function readTasksDirForTeam(
         status,
         workIntervals: normalizeWorkIntervals(parsed),
         reviewIntervals: normalizeReviewIntervals(parsed),
-        historyEvents: normalizeHistoryEvents(parsed),
+        historyEvents,
         blocks: Array.isArray(parsed.blocks) ? (parsed.blocks as unknown[]) : undefined,
         blockedBy: Array.isArray(parsed.blockedBy) ? (parsed.blockedBy as unknown[]) : undefined,
         related: Array.isArray(parsed.related)
diff --git a/src/renderer/components/sidebar/GlobalTaskList.tsx b/src/renderer/components/sidebar/GlobalTaskList.tsx
index c125fae9..7f5b95e6 100644
--- a/src/renderer/components/sidebar/GlobalTaskList.tsx
+++ b/src/renderer/components/sidebar/GlobalTaskList.tsx
@@ -462,6 +462,9 @@ export const GlobalTaskList = memo(function GlobalTaskList({
   }, [fetchAllTasks, globalTasksLoading]);
 
   useEffect(() => {
+    if (!filtersPopoverOpen) {
+      return;
+    }
     if (
       viewMode === 'grouped' &&
       !repositoryGroupsInitialized &&
@@ -475,6 +478,7 @@ export const GlobalTaskList = memo(function GlobalTaskList({
   }, [
     fetchProjects,
     fetchRepositoryGroups,
+    filtersPopoverOpen,
     projectsError,
     projectsInitialized,
     projectsLoading,
diff --git a/test/renderer/components/sidebar/GlobalTaskList.test.ts b/test/renderer/components/sidebar/GlobalTaskList.test.ts
index 01294f1d..a84e54d3 100644
--- a/test/renderer/components/sidebar/GlobalTaskList.test.ts
+++ b/test/renderer/components/sidebar/GlobalTaskList.test.ts
@@ -248,7 +248,7 @@ describe('GlobalTaskList project grouping', () => {
     storeListeners.clear();
   });
 
-  it('fetches repository groups when grouped project filter data is missing', async () => {
+  it('fetches repository groups when grouped project filter data is needed', async () => {
     vi.stubGlobal('IS_REACT_ACT_ENVIRONMENT', true);
     storeState.viewMode = 'grouped';
 
@@ -261,6 +261,19 @@ describe('GlobalTaskList project grouping', () => {
       await flushMicrotasks();
     });
 
+    expect(storeState.fetchRepositoryGroups).not.toHaveBeenCalled();
+    expect(storeState.fetchProjects).not.toHaveBeenCalled();
+
+    await act(async () => {
+      root.render(
+        React.createElement(GlobalTaskList, {
+          filtersPopoverOpen: true,
+          onFiltersPopoverOpenChange: vi.fn(),
+        })
+      );
+      await flushMicrotasks();
+    });
+
     expect(storeState.fetchRepositoryGroups).toHaveBeenCalledTimes(1);
     expect(storeState.fetchProjects).not.toHaveBeenCalled();
 
@@ -270,7 +283,7 @@ describe('GlobalTaskList project grouping', () => {
     });
   });
 
-  it('fetches flat projects when flat project filter data is missing', async () => {
+  it('fetches flat projects when flat project filter data is needed', async () => {
     vi.stubGlobal('IS_REACT_ACT_ENVIRONMENT', true);
 
     const host = document.createElement('div');
@@ -282,6 +295,19 @@ describe('GlobalTaskList project grouping', () => {
       await flushMicrotasks();
     });
 
+    expect(storeState.fetchProjects).not.toHaveBeenCalled();
+    expect(storeState.fetchRepositoryGroups).not.toHaveBeenCalled();
+
+    await act(async () => {
+      root.render(
+        React.createElement(GlobalTaskList, {
+          filtersPopoverOpen: true,
+          onFiltersPopoverOpenChange: vi.fn(),
+        })
+      );
+      await flushMicrotasks();
+    });
+
     expect(storeState.fetchProjects).toHaveBeenCalledTimes(1);
     expect(storeState.fetchRepositoryGroups).not.toHaveBeenCalled();
 
@@ -301,7 +327,12 @@ describe('GlobalTaskList project grouping', () => {
     const root = createRoot(host);
 
     await act(async () => {
-      root.render(React.createElement(GlobalTaskList));
+      root.render(
+        React.createElement(GlobalTaskList, {
+          filtersPopoverOpen: true,
+          onFiltersPopoverOpenChange: vi.fn(),
+        })
+      );
       await flushMicrotasks();
     });
 
@@ -323,7 +354,12 @@ describe('GlobalTaskList project grouping', () => {
     const root = createRoot(host);
 
     await act(async () => {
-      root.render(React.createElement(GlobalTaskList));
+      root.render(
+        React.createElement(GlobalTaskList, {
+          filtersPopoverOpen: true,
+          onFiltersPopoverOpenChange: vi.fn(),
+        })
+      );
       await flushMicrotasks();
     });