diff --git a/frontend/src/app/components/mempool-block/mempool-block.component.ts b/frontend/src/app/components/mempool-block/mempool-block.component.ts
index bb6e7791f..197b07247 100644
--- a/frontend/src/app/components/mempool-block/mempool-block.component.ts
+++ b/frontend/src/app/components/mempool-block/mempool-block.component.ts
@@ -64,6 +64,7 @@ export class MempoolBlockComponent implements OnInit, OnDestroy {
         }),
         tap(() => {
           this.stateService.markBlock$.next({ mempoolBlockIndex: this.mempoolBlockIndex });
+          this.websocketService.startTrackMempoolBlock(this.mempoolBlockIndex);
         })
       );
 
diff --git a/frontend/src/app/services/websocket.service.ts b/frontend/src/app/services/websocket.service.ts
index 1e7f528eb..3c72252db 100644
--- a/frontend/src/app/services/websocket.service.ts
+++ b/frontend/src/app/services/websocket.service.ts
@@ -183,14 +183,18 @@ export class WebsocketService {
   }
 
   startTrackMempoolBlock(block: number) {
-    this.websocketSubject.next({ 'track-mempool-block': block });
-    this.isTrackingMempoolBlock = true
-    this.trackingMempoolBlock = block
+    // skip duplicate tracking requests
+    if (this.trackingMempoolBlock !== block) {
+      this.websocketSubject.next({ 'track-mempool-block': block });
+      this.isTrackingMempoolBlock = true;
+      this.trackingMempoolBlock = block;
+    }
   }
 
   stopTrackMempoolBlock() {
     this.websocketSubject.next({ 'track-mempool-block': -1 });
-    this.isTrackingMempoolBlock = false
+    this.isTrackingMempoolBlock = false;
+    this.trackingMempoolBlock = null;
   }
 
   startTrackRbf(mode: 'all' | 'fullRbf') {