From 86e81c1187fc46165e67b9860d2e642fdb278d5e Mon Sep 17 00:00:00 2001
From: dvd233 <111864431+dvd233@users.noreply.github.com>
Date: Fri, 18 Sep 2026 14:21:13 -0700
Subject: [PATCH] fix(behavior): use viewport filtering after the first render

---
 .../unit/behaviors/auto-adapt-label.spec.ts   | 23 ++++++++++++++++++-
 packages/g6/src/behaviors/auto-adapt-label.ts |  1 +
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/packages/g6/__tests__/unit/behaviors/auto-adapt-label.spec.ts b/packages/g6/__tests__/unit/behaviors/auto-adapt-label.spec.ts
index 2bccb0580ec..9d2feb9bb72 100644
--- a/packages/g6/__tests__/unit/behaviors/auto-adapt-label.spec.ts
+++ b/packages/g6/__tests__/unit/behaviors/auto-adapt-label.spec.ts
@@ -1,6 +1,7 @@
 import { Point, type Graph } from '@/src';
+import { AutoAdaptLabel } from '@/src/behaviors';
 import { behaviorAutoAdaptLabel } from '@@/demos';
-import { createDemoGraph } from '@@/utils';
+import { createDemoGraph, sleep } from '@@/utils';
 
 describe('behavior auto adapt label', () => {
   let graph: Graph;
@@ -34,4 +35,24 @@ describe('behavior auto adapt label', () => {
     await expect(graph).toMatchSnapshot(__filename, 'zoom-3');
     graph.zoomTo(1, false, origin);
   });
+
+  it('uses viewport filtering after the first render', async () => {
+    const getLabelElements = jest.spyOn(AutoAdaptLabel.prototype as any, 'getLabelElements');
+    const getLabelElementsInView = jest.spyOn(AutoAdaptLabel.prototype as any, 'getLabelElementsInView');
+    const testGraph = await createDemoGraph(behaviorAutoAdaptLabel, { animation: false });
+
+    try {
+      expect(getLabelElements).toHaveBeenCalled();
+      const callsAfterInitialRender = getLabelElementsInView.mock.calls.length;
+
+      testGraph.zoomTo(3, false, [200, 200, 0]);
+      await sleep(150);
+
+      expect(getLabelElementsInView.mock.calls.length).toBeGreaterThan(callsAfterInitialRender);
+    } finally {
+      getLabelElements.mockRestore();
+      getLabelElementsInView.mockRestore();
+      testGraph.destroy();
+    }
+  });
 });
diff --git a/packages/g6/src/behaviors/auto-adapt-label.ts b/packages/g6/src/behaviors/auto-adapt-label.ts
index 300a3e5c1a0..5166f71cc9f 100644
--- a/packages/g6/src/behaviors/auto-adapt-label.ts
+++ b/packages/g6/src/behaviors/auto-adapt-label.ts
@@ -251,6 +251,7 @@ export class AutoAdaptLabel extends BaseBehavior<AutoAdaptLabelOptions> {
 
   private onAfterRender = (event: IEvent) => {
     this.onToggleVisibility(event);
+    this.isFirstRender = false;
     this.enableToggle = true;
   };