diff --git a/frontend/public/components/__tests__/events.spec.tsx b/frontend/public/components/__tests__/events.spec.tsx
new file mode 100644
index 00000000000..e4e5b0fef19
--- /dev/null
+++ b/frontend/public/components/__tests__/events.spec.tsx
@@ -0,0 +1,149 @@
+import { sortEvents, typeFilter } from '../events';
+
+const createMockEvent = (namespace: string, name: string, uid: string, lastTimestamp: string) => ({
+  metadata: {
+    uid,
+    name,
+    namespace,
+    resourceVersion: '1',
+  },
+  involvedObject: {
+    kind: 'Pod',
+    name: `${name}-pod`,
+    namespace,
+  },
+  type: 'Normal',
+  reason: 'Created',
+  message: `Created pod ${name}-pod`,
+  lastTimestamp,
+});
+
+describe('Event utility functions', () => {
+  describe('sortEvents', () => {
+    it('returns events ordered by lastTimestamp in descending order', () => {
+      const events = [
+        createMockEvent('ns1', 'event1', 'uid1', '2025-12-10T10:00:00Z'),
+        createMockEvent('ns1', 'event2', 'uid2', '2025-12-10T12:00:00Z'),
+        createMockEvent('ns1', 'event3', 'uid3', '2025-12-10T11:00:00Z'),
+      ];
+
+      const sorted = sortEvents(events);
+
+      expect(sorted[0].metadata.name).toBe('event2');
+      expect(sorted[1].metadata.name).toBe('event3');
+      expect(sorted[2].metadata.name).toBe('event1');
+    });
+
+    it('sorts events by timestamp regardless of namespace', () => {
+      const events = [
+        createMockEvent('project-a', 'event-a', 'uid-a', '2025-12-10T10:00:00Z'),
+        createMockEvent('project-b', 'event-b', 'uid-b', '2025-12-10T12:00:00Z'),
+      ];
+
+      const sorted = sortEvents(events);
+
+      expect(sorted[0].metadata.namespace).toBe('project-b');
+      expect(sorted[1].metadata.namespace).toBe('project-a');
+    });
+  });
+
+  describe('typeFilter', () => {
+    it('returns true for "all" filter with any event type', () => {
+      const normalEvent = {
+        ...createMockEvent('ns', 'event', 'uid', '2025-12-10T10:00:00Z'),
+        type: 'Normal',
+      };
+      const warningEvent = {
+        ...createMockEvent('ns', 'event', 'uid', '2025-12-10T10:00:00Z'),
+        type: 'Warning',
+      };
+
+      expect(typeFilter('all', normalEvent)).toBe(true);
+      expect(typeFilter('all', warningEvent)).toBe(true);
+    });
+
+    it('returns true only for matching event types', () => {
+      const normalEvent = {
+        ...createMockEvent('ns', 'event', 'uid', '2025-12-10T10:00:00Z'),
+        type: 'Normal',
+      };
+      const warningEvent = {
+        ...createMockEvent('ns', 'event', 'uid', '2025-12-10T10:00:00Z'),
+        type: 'Warning',
+      };
+
+      expect(typeFilter('normal', normalEvent)).toBe(true);
+      expect(typeFilter('normal', warningEvent)).toBe(false);
+
+      expect(typeFilter('warning', normalEvent)).toBe(false);
+      expect(typeFilter('warning', warningEvent)).toBe(true);
+    });
+
+    it('treats events without type property as normal type', () => {
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars, no-unused-vars
+      const { type: _ignored, ...eventWithoutType } = createMockEvent(
+        'ns',
+        'event',
+        'uid',
+        '2025-12-10T10:00:00Z',
+      );
+
+      expect(typeFilter('normal', eventWithoutType)).toBe(true);
+      expect(typeFilter('warning', eventWithoutType)).toBe(false);
+    });
+  });
+
+  describe('Integration with namespace filtering', () => {
+    it('returns events sorted by timestamp across multiple namespaces', () => {
+      const events = [
+        createMockEvent('project-a', 'event-a1', 'uid-a1', '2025-12-10T10:00:00Z'),
+        createMockEvent('project-b', 'event-b1', 'uid-b1', '2025-12-10T12:00:00Z'),
+        createMockEvent('project-a', 'event-a2', 'uid-a2', '2025-12-10T11:00:00Z'),
+      ];
+
+      const sorted = sortEvents(events);
+
+      expect(sorted[0].metadata.name).toBe('event-b1');
+      expect(sorted[1].metadata.name).toBe('event-a2');
+      expect(sorted[2].metadata.name).toBe('event-a1');
+    });
+
+    it('can be filtered by namespace while preserving sort order', () => {
+      const allEvents = [
+        createMockEvent('project-a', 'event-a1', 'uid-a1', '2025-12-10T10:00:00Z'),
+        createMockEvent('project-b', 'event-b1', 'uid-b1', '2025-12-10T12:00:00Z'),
+        createMockEvent('project-a', 'event-a2', 'uid-a2', '2025-12-10T11:00:00Z'),
+      ];
+
+      const sorted = sortEvents(allEvents);
+      const selectedNamespace = 'project-a';
+      const filteredEvents = sorted.filter((e) => e.metadata.namespace === selectedNamespace);
+
+      expect(filteredEvents).toHaveLength(2);
+      expect(filteredEvents[0].metadata.name).toBe('event-a2');
+      expect(filteredEvents[1].metadata.name).toBe('event-a1');
+      expect(filteredEvents.every((e) => e.metadata.namespace === 'project-a')).toBe(true);
+    });
+
+    it('returns different results when namespace filter changes', () => {
+      const allEvents = [
+        createMockEvent('project-a', 'event-a1', 'uid-a1', '2025-12-10T10:00:00Z'),
+        createMockEvent('project-b', 'event-b1', 'uid-b1', '2025-12-10T12:00:00Z'),
+      ];
+
+      const sorted = sortEvents(allEvents);
+
+      let selectedNamespace = 'project-a';
+      let filteredEvents = sorted.filter((e) => e.metadata.namespace === selectedNamespace);
+      expect(filteredEvents).toHaveLength(1);
+      expect(filteredEvents[0].metadata.name).toBe('event-a1');
+
+      selectedNamespace = 'project-b';
+      filteredEvents = sorted.filter((e) => e.metadata.namespace === selectedNamespace);
+
+      expect(filteredEvents).toHaveLength(1);
+      expect(filteredEvents[0].metadata.name).toBe('event-b1');
+      expect(filteredEvents[0].metadata.namespace).toBe('project-b');
+    });
+  });
+});
diff --git a/frontend/public/components/events.jsx b/frontend/public/components/events.jsx
index 04a014bbb9a..b38fe2ddd8d 100644
--- a/frontend/public/components/events.jsx
+++ b/frontend/public/components/events.jsx
@@ -394,6 +394,7 @@ const EventStream = ({
   // Handle websocket setup and teardown when dependent props change
   useEffect(() => {
     ws.current?.destroy();
+    setSortedEvents([]);
     if (!mock) {
       const webSocketID = `${namespace || 'all'}-sysevents`;
       const watchURLOptions = {