fix: anythingDrawn check

Author: asuzuki-jumptrading

src/features/Overview/ShredsProgression/WebGl/chartUtils.ts

@@ -184,6 +184,7 @@ export function draw(
     maxShreds,
   );
 
+  let anythingDrawn = false;
   const minDirtySlot = store.get(minDirtySlotByChartAtom).get(chartId);
   const tempEventPositions = new Map<
     Exclude<ShredEvent, ShredEvent.slot_complete>,
@@ -226,6 +227,9 @@ export function draw(
         visibleTsRange,
       });
       rectangleIdx += rectanglesAdded;
+      if (rectanglesAdded) {
+        anythingDrawn = true;
+      }
     }
     updateSlotMeshCounts(slotMesh, rectangleIdx);
   }
@@ -244,8 +248,6 @@ export function draw(
     }
   }
 
-  const anythingDrawn = minDirtySlot != null;
-
   if (forceDraw || anythingDrawn || cameraChanged) {
     rendererObj.renderer.render(rendererObj.scene, rendererObj.camera);
   }