diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d1dd4eb..839c884 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,6 +10,7 @@ env:
   MINIMUM_VERSION: 2019.4
   # EXCLUDE_FILTER: The excluded versions of Unity.
   EXCLUDE_FILTER: "(2020.2.0|2021.1|2023.3)"
+  PROJECT_PATH: .
 
 on:
   workflow_dispatch:
@@ -21,7 +22,7 @@ on:
   push:
     branches:
       - develop
-      - develop-preview
+      - "develop-*"
     tags:
       - "!*"
     paths-ignore:
@@ -71,11 +72,11 @@ jobs:
     steps:
       - name: 🚚 Checkout ($${{ github.ref }})
         if: github.event_name == 'push'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: 🚚 Checkout pull request (pull_request_target)
         if: github.event_name == 'pull_request_target'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 0
@@ -85,25 +86,27 @@ jobs:
         run: |
           git config user.name "GitHub Actions"
           git config user.email "actions@github.com"
-          git merge origin/${{ github.event.pull_request.base.ref }} --no-edit
+          git rebase ${{ github.event.pull_request.base.sha }}
+          git log --oneline -n 10
 
       - name: 📥 Cache library
         uses: actions/cache@v4
         with:
-          path: Library
-          key: Library-${{ matrix.unityVersion }}-${{ github.event.pull_request.head.sha || github.sha }}
+          path: ${{ env.PROJECT_PATH }}/Library
+          key: ${{ env.PROJECT_PATH }}-Library-${{ matrix.unityVersion }}-${{ github.event.pull_request.head.sha || github.sha }}
           restore-keys: |
-            Library-${{ matrix.unityVersion }}-
-            Library-
+            ${{ env.PROJECT_PATH }}-Library-${{ matrix.unityVersion }}-
+            ${{ env.PROJECT_PATH }}-Library-
 
       - name: 🛠️ Build Unity Project (Test)
-        uses: game-ci/unity-builder@v4
+        uses: game-ci/unity-builder@main
         timeout-minutes: 45
         with:
           customImage: ghcr.io/mob-sakai/unity3d:${{ matrix.unityVersion }}
           targetPlatform: StandaloneLinux64
           allowDirtyBuild: true
           customParameters: -nographics
+          projectPath: ${{ env.PROJECT_PATH }}
         env:
           UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
           UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
@@ -118,6 +121,7 @@ jobs:
           customParameters: -nographics
           checkName: ${{ matrix.unityVersion }} Test Results
           githubToken: ${{ github.token }}
+          projectPath: ${{ env.PROJECT_PATH }}
         env:
           UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
           UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
diff --git a/Packages/src/Runtime/UIParticle.cs b/Packages/src/Runtime/UIParticle.cs
index 3f4feb9..b24676a 100644
--- a/Packages/src/Runtime/UIParticle.cs
+++ b/Packages/src/Runtime/UIParticle.cs
@@ -17,7 +17,7 @@ namespace Coffee.UIExtensions
     /// <summary>
     /// Render maskable and sortable particle effect ,without Camera, RenderTexture or Canvas.
     /// </summary>
-    [Icon("Packages/com.coffee.ui-particle/Icons/UIParticleIcon.png")]
+    [Icon("Packages/com.coffee.ui-particle/Editor/UIParticleIcon.png")]
     [ExecuteAlways]
     [RequireComponent(typeof(RectTransform))]
     [RequireComponent(typeof(CanvasRenderer))]
diff --git a/Packages/src/Runtime/UIParticleRenderer.cs b/Packages/src/Runtime/UIParticleRenderer.cs
index fc1ea73..92cf049 100644
--- a/Packages/src/Runtime/UIParticleRenderer.cs
+++ b/Packages/src/Runtime/UIParticleRenderer.cs
@@ -15,7 +15,7 @@ using UnityEngine.UI;
 
 namespace Coffee.UIExtensions
 {
-    [Icon("Packages/com.coffee.ui-particle/Icons/UIParticleIcon.png")]
+    [Icon("Packages/com.coffee.ui-particle/Editor/UIParticleIcon.png")]
     [ExecuteAlways]
     [RequireComponent(typeof(RectTransform))]
     [RequireComponent(typeof(CanvasRenderer))]
@@ -283,10 +283,6 @@ namespace Coffee.UIExtensions
                 || !transform.lossyScale.GetScaled(_parent.scale3DForCalc).IsVisible() // Scale is not visible.
                 || (!_particleSystem.IsAlive() && !_particleSystem.isPlaying) // No particle.
                 || (_isTrail && !_particleSystem.trails.enabled) // Trail, but it is not enabled.
-#if UNITY_2018_3_OR_NEWER
-                || canvasRenderer.GetInheritedAlpha() <
-                0.01f // #102: Do not bake particle system to mesh when the alpha is zero.
-#endif
             )
             {
                 Profiler.BeginSample("[UIParticleRenderer] Clear Mesh");
@@ -315,6 +311,13 @@ namespace Coffee.UIExtensions
 #endif
                 {
                     ResolveResolutionChange(psPos, scale);
+
+                    // fix: second and subsequent bursts not displayed when world simulation and non-looping. (#326)
+                    if (!_particleSystem.IsLocalSpace() && !main.loop && _particleSystem.time == 0)
+                    {
+                        _delay = true;
+                    }
+
                     Simulate(scale, _parent.isPaused || _delay);
 
                     if (_delay && !_parent.isPaused)