diff --git a/Assets/Resources/Sprites/Editor/UI/icons/open-category.png b/Assets/Resources/Sprites/Editor/UI/icons/open-category.png
deleted file mode 100644
index 4619cb728..000000000
Binary files a/Assets/Resources/Sprites/Editor/UI/icons/open-category.png and /dev/null differ
diff --git a/Assets/Resources/Sprites/Editor/UI/icons/open-category.png.meta b/Assets/Resources/Sprites/Editor/UI/icons/open-category.png.meta
deleted file mode 100644
index 03eaa66c4..000000000
--- a/Assets/Resources/Sprites/Editor/UI/icons/open-category.png.meta
+++ /dev/null
@@ -1,123 +0,0 @@
-fileFormatVersion: 2
-guid: 8001d517cfefe9444b37aea8d1db50d8
-TextureImporter:
-  internalIDToNameTable: []
-  externalObjects: {}
-  serializedVersion: 12
-  mipmaps:
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-    enableMipMap: 0
-    sRGBTexture: 1
-    linearTexture: 0
-    fadeOut: 0
-    borderMipMap: 0
-    mipMapsPreserveCoverage: 0
-    alphaTestReferenceValue: 0.5
-    mipMapFadeDistanceStart: 1
-    mipMapFadeDistanceEnd: 3
-  bumpmap:
-    convertToNormalMap: 0
-    externalNormalMap: 0
-    heightScale: 0.25
-    normalMapFilter: 0
-  isReadable: 0
-  streamingMipmaps: 0
-  streamingMipmapsPriority: 0
-  vTOnly: 0
-  ignoreMasterTextureLimit: 0
-  grayScaleToAlpha: 0
-  generateCubemap: 6
-  cubemapConvolution: 0
-  seamlessCubemap: 0
-  textureFormat: 1
-  maxTextureSize: 2048
-  textureSettings:
-    serializedVersion: 2
-    filterMode: 1
-    aniso: 1
-    mipBias: 0
-    wrapU: 1
-    wrapV: 1
-    wrapW: 1
-  nPOTScale: 0
-  lightmap: 0
-  compressionQuality: 50
-  spriteMode: 1
-  spriteExtrude: 1
-  spriteMeshType: 1
-  alignment: 0
-  spritePivot: {x: 0.5, y: 0.5}
-  spritePixelsToUnits: 100
-  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 1
-  alphaUsage: 1
-  alphaIsTransparency: 1
-  spriteTessellationDetail: -1
-  textureType: 8
-  textureShape: 1
-  singleChannelComponent: 0
-  flipbookRows: 1
-  flipbookColumns: 1
-  maxTextureSizeSet: 0
-  compressionQualitySet: 0
-  textureFormatSet: 0
-  ignorePngGamma: 0
-  applyGammaDecoding: 0
-  cookieLightType: 0
-  platformSettings:
-  - serializedVersion: 3
-    buildTarget: DefaultTexturePlatform
-    maxTextureSize: 512
-    resizeAlgorithm: 0
-    textureFormat: -1
-    textureCompression: 1
-    compressionQuality: 50
-    crunchedCompression: 0
-    allowsAlphaSplitting: 0
-    overridden: 0
-    androidETC2FallbackOverride: 0
-    forceMaximumCompressionQuality_BC6H_BC7: 0
-  - serializedVersion: 3
-    buildTarget: Standalone
-    maxTextureSize: 2048
-    resizeAlgorithm: 0
-    textureFormat: -1
-    textureCompression: 1
-    compressionQuality: 50
-    crunchedCompression: 0
-    allowsAlphaSplitting: 0
-    overridden: 0
-    androidETC2FallbackOverride: 0
-    forceMaximumCompressionQuality_BC6H_BC7: 0
-  - serializedVersion: 3
-    buildTarget: Server
-    maxTextureSize: 2048
-    resizeAlgorithm: 0
-    textureFormat: -1
-    textureCompression: 1
-    compressionQuality: 50
-    crunchedCompression: 0
-    allowsAlphaSplitting: 0
-    overridden: 0
-    androidETC2FallbackOverride: 0
-    forceMaximumCompressionQuality_BC6H_BC7: 0
-  spriteSheet:
-    serializedVersion: 2
-    sprites: []
-    outline: []
-    physicsShape: []
-    bones: []
-    spriteID: 5e97eb03825dee720800000000000000
-    internalID: 0
-    vertices: []
-    indices: 
-    edges: []
-    weights: []
-    secondaryTextures: []
-    nameFileIdTable: {}
-  spritePackingTag: 
-  pSDRemoveMatte: 0
-  pSDShowRemoveMatteOption: 0
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Assets/Resources/Sprites/Editor/UI/icons_atlas.spriteatlas b/Assets/Resources/Sprites/Editor/UI/icons_atlas.spriteatlas
index 85cba7e24..8770e4964 100644
--- a/Assets/Resources/Sprites/Editor/UI/icons_atlas.spriteatlas
+++ b/Assets/Resources/Sprites/Editor/UI/icons_atlas.spriteatlas
@@ -59,7 +59,6 @@ SpriteAtlas:
   - {fileID: 21300000, guid: 348825b5c77b9d143961119fc008e631, type: 3}
   - {fileID: 21300000, guid: 44c391c5df20f2844b9437c0f3138355, type: 3}
   - {fileID: 21300000, guid: 4ea196d68cba90a4d8b08ad6fe012f49, type: 3}
-  - {fileID: 21300000, guid: 8001d517cfefe9444b37aea8d1db50d8, type: 3}
   - {fileID: 21300000, guid: 55bb46a7614176b4c941a5caf846f7e8, type: 3}
   - {fileID: 21300000, guid: 57971d0838f02124080be29466f8f638, type: 3}
   - {fileID: 21300000, guid: e85d5d286a8191b499c570d33dd0899c, type: 3}
@@ -92,7 +91,6 @@ SpriteAtlas:
   - undo
   - tempo-change
   - copy
-  - open-category
   - fullscreen
   - grid-snap
   - bookmark
diff --git a/Assets/Scenes/Editor.unity b/Assets/Scenes/Editor.unity
index 5bcf57a38..ada53679c 100644
--- a/Assets/Scenes/Editor.unity
+++ b/Assets/Scenes/Editor.unity
@@ -371,9 +371,9 @@ RectTransform:
   m_Father: {fileID: 574002313}
   m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
-  m_AnchorMin: {x: 0, y: 1}
-  m_AnchorMax: {x: 0, y: 1}
-  m_AnchoredPosition: {x: 0, y: -21}
+  m_AnchorMin: {x: 0, y: 0}
+  m_AnchorMax: {x: 0, y: 0}
+  m_AnchoredPosition: {x: 0, y: 0}
   m_SizeDelta: {x: 32, y: 32}
   m_Pivot: {x: 0, y: 0.5}
 --- !u!114 &9435782
@@ -3656,9 +3656,9 @@ RectTransform:
   m_Father: {fileID: 539838476}
   m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
-  m_AnchorMin: {x: 0, y: 1}
-  m_AnchorMax: {x: 0, y: 1}
-  m_AnchoredPosition: {x: 32, y: -21}
+  m_AnchorMin: {x: 0, y: 0}
+  m_AnchorMax: {x: 0, y: 0}
+  m_AnchoredPosition: {x: 0, y: 0}
   m_SizeDelta: {x: 32, y: 32}
   m_Pivot: {x: 1, y: 0.5}
 --- !u!114 &121871281
@@ -3801,9 +3801,9 @@ RectTransform:
   m_Father: {fileID: 539838476}
   m_RootOrder: 1
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
-  m_AnchorMin: {x: 0, y: 1}
-  m_AnchorMax: {x: 0, y: 1}
-  m_AnchoredPosition: {x: 72, y: -21}
+  m_AnchorMin: {x: 0, y: 0}
+  m_AnchorMax: {x: 0, y: 0}
+  m_AnchoredPosition: {x: 0, y: 0}
   m_SizeDelta: {x: 32, y: 32}
   m_Pivot: {x: 1, y: 0.5}
 --- !u!114 &129013734
@@ -3923,9 +3923,9 @@ RectTransform:
   m_Father: {fileID: 539838476}
   m_RootOrder: 2
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
-  m_AnchorMin: {x: 0, y: 1}
-  m_AnchorMax: {x: 0, y: 1}
-  m_AnchoredPosition: {x: 112, y: -21}
+  m_AnchorMin: {x: 0, y: 0}
+  m_AnchorMax: {x: 0, y: 0}
+  m_AnchoredPosition: {x: 0, y: 0}
   m_SizeDelta: {x: 32, y: 32}
   m_Pivot: {x: 1, y: 0.5}
 --- !u!114 &151246938
@@ -4507,9 +4507,7 @@ MonoBehaviour:
   _gameSelectionEventRef: {fileID: 1119871594}
   _headerObject: {fileID: 1039002537}
   _headerText: {fileID: 93287373}
-  _collapseImage: {fileID: 946351541}
-  _openSprite: {fileID: 21300000, guid: 8001d517cfefe9444b37aea8d1db50d8, type: 3}
-  _closedSprite: {fileID: 21300000, guid: f3bab52971a96c14eb2414b49b0d3683, type: 3}
+  _collapseImageTrans: {fileID: 946351540}
 --- !u!1 &170980090
 GameObject:
   m_ObjectHideFlags: 0
@@ -22516,14 +22514,14 @@ RectTransform:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 946351539}
-  m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
+  m_LocalRotation: {x: 0, y: 0, z: -0.7071068, w: 0.7071068}
   m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 0.9, y: 0.9, z: 1}
   m_ConstrainProportionsScale: 0
   m_Children: []
   m_Father: {fileID: 2133718755}
   m_RootOrder: 0
-  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: -90}
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 1, y: 1}
   m_AnchoredPosition: {x: 0, y: 0}
@@ -22549,7 +22547,7 @@ MonoBehaviour:
   m_OnCullStateChanged:
     m_PersistentCalls:
       m_Calls: []
-  m_Sprite: {fileID: 21300000, guid: 8001d517cfefe9444b37aea8d1db50d8, type: 3}
+  m_Sprite: {fileID: 21300000, guid: f3bab52971a96c14eb2414b49b0d3683, type: 3}
   m_Type: 0
   m_PreserveAspect: 0
   m_FillCenter: 1
@@ -30934,9 +30932,9 @@ RectTransform:
   m_Father: {fileID: 574002313}
   m_RootOrder: 1
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
-  m_AnchorMin: {x: 0, y: 1}
-  m_AnchorMax: {x: 0, y: 1}
-  m_AnchoredPosition: {x: 40, y: -21}
+  m_AnchorMin: {x: 0, y: 0}
+  m_AnchorMax: {x: 0, y: 0}
+  m_AnchoredPosition: {x: 0, y: 0}
   m_SizeDelta: {x: 32, y: 32}
   m_Pivot: {x: 0, y: 0.5}
 --- !u!114 &1345846031
@@ -38928,9 +38926,9 @@ RectTransform:
   m_Father: {fileID: 574002313}
   m_RootOrder: 2
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
-  m_AnchorMin: {x: 0, y: 1}
-  m_AnchorMax: {x: 0, y: 1}
-  m_AnchoredPosition: {x: 80, y: -21}
+  m_AnchorMin: {x: 0, y: 0}
+  m_AnchorMax: {x: 0, y: 0}
+  m_AnchoredPosition: {x: 0, y: 0}
   m_SizeDelta: {x: 32, y: 32}
   m_Pivot: {x: 0, y: 0.5}
 --- !u!114 &1783491359
diff --git a/Assets/Scripts/LevelEditor/EventSelector/GameSelectionCategory.cs b/Assets/Scripts/LevelEditor/EventSelector/GameSelectionCategory.cs
index 3252e3954..6b1624ba6 100644
--- a/Assets/Scripts/LevelEditor/EventSelector/GameSelectionCategory.cs
+++ b/Assets/Scripts/LevelEditor/EventSelector/GameSelectionCategory.cs
@@ -11,9 +11,7 @@ namespace HeavenStudio.Editor
         [SerializeField] private NewGameSelectionEvent _gameSelectionEventRef;
         [SerializeField] private GameObject _headerObject;
         [SerializeField] private TMP_Text _headerText;
-        [SerializeField] private Image _collapseImage;
-        [SerializeField] private Sprite _openSprite;
-        [SerializeField] private Sprite _closedSprite;
+        [SerializeField] private RectTransform _collapseImageTrans;
 
         private bool _isOpen = true;
 
@@ -54,7 +52,7 @@ namespace HeavenStudio.Editor
         {
             _isOpen = !_isOpen;
 
-            _collapseImage.sprite = _isOpen ? _openSprite : _closedSprite;
+            _collapseImageTrans.localEulerAngles = new Vector3(0, 0, _isOpen ? -90 : 0);
 
             foreach (var e in _gameSelectionEventList)
             {