diff --git a/packages/frontend/core/src/components/pure/ai-island/index.tsx b/packages/frontend/core/src/components/pure/ai-island/index.tsx
index 485a543e69..daf449d0df 100644
--- a/packages/frontend/core/src/components/pure/ai-island/index.tsx
+++ b/packages/frontend/core/src/components/pure/ai-island/index.tsx
@@ -8,30 +8,9 @@ import {
   aiIslandAnimationBg,
   aiIslandBtn,
   aiIslandWrapper,
-  borderAngle1,
-  borderAngle2,
-  borderAngle3,
+  gradient,
 } from './styles.css';
 
-if (
-  typeof window !== 'undefined' &&
-  window.CSS &&
-  window.CSS.registerProperty
-) {
-  const getName = (nameWithVar: string) => nameWithVar.slice(4, -1);
-  const registerAngle = (varName: string, initialValue: number) => {
-    window.CSS.registerProperty({
-      name: getName(varName),
-      syntax: '<angle>',
-      inherits: false,
-      initialValue: `${initialValue}deg`,
-    });
-  };
-  registerAngle(borderAngle1, 0);
-  registerAngle(borderAngle2, 90);
-  registerAngle(borderAngle3, 180);
-}
-
 export const AIIsland = () => {
   // to make sure ai island is hidden first and animate in
   const [hide, setHide] = useState(true);
@@ -52,7 +31,13 @@ export const AIIsland = () => {
         data-hide={hide}
         data-animation={!aiChatHasEverOpened}
       >
-        <div className={aiIslandAnimationBg} />
+        {aiChatHasEverOpened ? null : (
+          <div className={aiIslandAnimationBg}>
+            <div className={gradient} />
+            <div className={gradient} />
+            <div className={gradient} />
+          </div>
+        )}
         <button
           className={aiIslandBtn}
           data-testid="ai-island"
diff --git a/packages/frontend/core/src/components/pure/ai-island/styles.css.ts b/packages/frontend/core/src/components/pure/ai-island/styles.css.ts
index 54fd76a2e6..c2ff7a4a94 100644
--- a/packages/frontend/core/src/components/pure/ai-island/styles.css.ts
+++ b/packages/frontend/core/src/components/pure/ai-island/styles.css.ts
@@ -51,14 +51,8 @@ const brightGreen = createVar('bright-green');
 const brightRed = createVar('bright-red');
 const borderWidth = createVar('border-width');
 
-const rotateBg1 = keyframes({
-  to: { [borderAngle1.slice(4, -1)]: '360deg' },
-});
-const rotateBg2 = keyframes({
-  to: { [borderAngle2.slice(4, -1)]: '450deg' },
-});
-const rotateBg3 = keyframes({
-  to: { [borderAngle3.slice(4, -1)]: '540deg' },
+const rotateBg = keyframes({
+  to: { transform: 'rotate(360deg)' },
 });
 
 export const aiIslandAnimationBg = style({
@@ -68,6 +62,7 @@ export const aiIslandAnimationBg = style({
   left: 0,
   position: 'absolute',
   borderRadius: '50%',
+  overflow: 'hidden',
 
   vars: {
     [borderAngle1]: '0deg',
@@ -79,21 +74,6 @@ export const aiIslandAnimationBg = style({
     [borderWidth]: '1.5px',
   },
   backgroundColor: 'transparent',
-  backgroundImage: `conic-gradient(from ${borderAngle1} at 50% 50%,
-      transparent,
-      ${brightBlue} 10%,
-      transparent 30%,
-      transparent),
-    conic-gradient(from ${borderAngle2} at 50% 50%,
-      transparent,
-      ${brightGreen} 10%,
-      transparent 60%,
-      transparent),
-    conic-gradient(from ${borderAngle3} at 50% 50%,
-      transparent,
-      ${brightRed} 10%,
-      transparent 50%,
-      transparent)`,
 
   selectors: {
     [`${aiIslandWrapper}[data-animation="true"] &`]: {
@@ -101,7 +81,44 @@ export const aiIslandAnimationBg = style({
       height: `calc(100% + 2 * ${borderWidth})`,
       top: `calc(-1 * ${borderWidth})`,
       left: `calc(-1 * ${borderWidth})`,
-      animation: `${rotateBg1} 3s linear infinite, ${rotateBg2} 8s linear infinite, ${rotateBg3} 13s linear infinite`,
+    },
+  },
+});
+
+export const gradient = style({
+  position: 'absolute',
+  width: '100%',
+  height: '100%',
+  borderRadius: 'inherit',
+  animationName: rotateBg,
+  animationIterationCount: 'infinite',
+  animationTimingFunction: 'linear',
+  pointerEvents: 'none',
+  willChange: 'transform',
+  selectors: {
+    [`&:nth-of-type(1)`]: {
+      animationDuration: '3s',
+      backgroundImage: `conic-gradient(from ${borderAngle1} at 50% 50%, 
+        transparent, ${brightBlue} 10%, 
+        transparent 30%, 
+        transparent
+      )`,
+    },
+    [`&:nth-of-type(2)`]: {
+      animationDuration: '8s',
+      backgroundImage: `conic-gradient(from ${borderAngle2} at 50% 50%,
+        transparent, ${brightGreen} 10%,
+        transparent 60%,
+        transparent
+      )`,
+    },
+    [`&:nth-of-type(3)`]: {
+      animationDuration: '13s',
+      backgroundImage: `conic-gradient(from ${borderAngle3} at 50% 50%,
+        transparent, ${brightRed} 10%,
+        transparent 50%,
+        transparent
+      )`,
     },
   },
 });
diff --git a/packages/frontend/core/src/modules/right-sidebar/entities/right-sidebar.ts b/packages/frontend/core/src/modules/right-sidebar/entities/right-sidebar.ts
index e43c19f188..62ffcf63ba 100644
--- a/packages/frontend/core/src/modules/right-sidebar/entities/right-sidebar.ts
+++ b/packages/frontend/core/src/modules/right-sidebar/entities/right-sidebar.ts
@@ -1,5 +1,6 @@
 import type { GlobalState } from '@toeverything/infra';
 import { Entity, LiveData } from '@toeverything/infra';
+import { combineLatest } from 'rxjs';
 
 import type { SidebarTabName } from '../../multi-tab-sidebar';
 import { RightSidebarView } from './right-sidebar-view';
@@ -14,11 +15,13 @@ export class RightSidebar extends Entity {
   constructor(private readonly globalState: GlobalState) {
     super();
 
-    const sub = this.activeTabName$.subscribe(name => {
-      if (name === 'chat') {
-        this.globalState.set(RIGHT_SIDEBAR_AI_HAS_EVER_OPENED_KEY, true);
+    const sub = combineLatest([this.activeTabName$, this.isOpen$]).subscribe(
+      ([name, open]) => {
+        if (name === 'chat' && open) {
+          this.globalState.set(RIGHT_SIDEBAR_AI_HAS_EVER_OPENED_KEY, true);
+        }
       }
-    });
+    );
     this._disposables.push(() => sub.unsubscribe());
   }