diff --git a/src/components/Map/usePostsEngine.js b/src/components/Map/usePostsEngine.js
index 907314e..d5f82a4 100644
--- a/src/components/Map/usePostsEngine.js
+++ b/src/components/Map/usePostsEngine.js
@@ -434,6 +434,12 @@ export function usePostsEngine({
     const map = mapRef.current;
     replacePoolRef.current = true;
     pendingFilterRef.current = `${mainFilter}|${subFilter}|${timeHours}`;
+    allPostsRef.current = [];
+    setVisiblePosts([]);
+    syncMarkers([]);
+    if (map && clustersEnabled && heatmapEnabled) {
+      updateClusterAreas(map, []);
+    }
     if (map) {
       map.__swForceFetchAt = Date.now();
       setTimeout(() => {
@@ -442,7 +448,7 @@ export function usePostsEngine({
         } catch {}
       }, 60);
     }
-  }, [mainFilter, subFilter, timeHours, mapRef]);
+  }, [mainFilter, subFilter, timeHours, mapRef, syncMarkers, clustersEnabled, heatmapEnabled, updateClusterAreas]);
 
   const priorityOpts = {
     maxFullCards: 15,