diff --git a/.changelog/lang_zh-Hans.json b/.changelog/lang_zh-Hans.json
index af24f246..b8bc541e 100644
--- a/.changelog/lang_zh-Hans.json
+++ b/.changelog/lang_zh-Hans.json
@@ -25,6 +25,7 @@
         "console.setContentBackgroundColor 方法无法接受颜色名称参数的问题 _[`issue #384`](http://issues.autojs6.com/384)_",
         "images.compress 方法实现原理由像素降采样修正为编码质量变化",
         "images.resize 方法无法正常使用的问题",
+        "engines.all 方法可能触发 ConcurrentModificationException 的问题 _[`issue #394`](http://issues.autojs6.com/394)_",
         "README.md 中部分语言日期格式不正确的问题",
         "Gradle 构建脚本可能因获取到无效库档案文件长度而导致构建失败的问题 _[`issue #389`](http://issues.autojs6.com/389)_"
       ],
diff --git a/app/src/main/java/org/autojs/autojs/engine/ScriptEngineManager.java b/app/src/main/java/org/autojs/autojs/engine/ScriptEngineManager.java
index b1319034..480e9b57 100644
--- a/app/src/main/java/org/autojs/autojs/engine/ScriptEngineManager.java
+++ b/app/src/main/java/org/autojs/autojs/engine/ScriptEngineManager.java
@@ -9,8 +9,10 @@ import org.autojs.autojs.execution.ScriptExecution;
 import org.autojs.autojs.script.ScriptSource;
 import org.autojs.autojs.tool.Supplier;
 
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.Map;
 import java.util.Set;
 
@@ -52,7 +54,9 @@ public class ScriptEngineManager {
     }
 
     public Set<ScriptEngine<? extends ScriptSource>> getEngines() {
-        return mEngines;
+        synchronized (mEngines) {
+            return Collections.unmodifiableSet(new LinkedHashSet<>(mEngines));
+        }
     }
 
     public android.content.Context getAndroidContext() {
diff --git a/app/src/main/java/org/autojs/autojs/engine/ScriptEngineService.java b/app/src/main/java/org/autojs/autojs/engine/ScriptEngineService.java
index 844dd001..f5e40103 100644
--- a/app/src/main/java/org/autojs/autojs/engine/ScriptEngineService.java
+++ b/app/src/main/java/org/autojs/autojs/engine/ScriptEngineService.java
@@ -217,9 +217,7 @@ public class ScriptEngineService {
     }
 
     public Set<ScriptEngine<? extends ScriptSource>> getEngines() {
-        synchronized (mScriptEngineManager) {
-            return new LinkedHashSet<>(mScriptEngineManager.getEngines());
-        }
+        return mScriptEngineManager.getEngines();
     }
 
     public Collection<ScriptExecution> getScriptExecutions() {
diff --git a/app/src/main/java/org/autojs/autojs/ui/main/task/TaskManagerFragment.kt b/app/src/main/java/org/autojs/autojs/ui/main/task/TaskManagerFragment.kt
index 57c09f5f..a10788e0 100644
--- a/app/src/main/java/org/autojs/autojs/ui/main/task/TaskManagerFragment.kt
+++ b/app/src/main/java/org/autojs/autojs/ui/main/task/TaskManagerFragment.kt
@@ -61,7 +61,7 @@ open class TaskManagerFragment : ViewPagerFragment(45), ViewStatesManageable {
     }
 
     override fun onFabClick(fab: FloatingActionButton) {
-        AutoJs.instance.scriptEngineService.stopAll()
+        AutoJs.instance.scriptEngineService.stopAllAndToast()
     }
 
     override fun onBackPressed(activity: Activity) = false
diff --git a/version.properties b/version.properties
index 77a44e1d..89d389ad 100644
--- a/version.properties
+++ b/version.properties
@@ -1,5 +1,5 @@
-#Thu May 22 17:14:04 CST 2025
-BUILD_TIME=1747905244827
+#Fri May 23 21:19:26 CST 2025
+BUILD_TIME=1748006366599
 COMPILE_SDK_VERSION=35
 IMAGE_QUANT_CMAKE_VERSION=3.22.1
 IMAGE_QUANT_NDK_VERSION=26.1.10909125
@@ -19,6 +19,6 @@ RAPID_OCR_OPENCV_MOBILE_LABEL_VERSION=13
 RAPID_OCR_OPENCV_MOBILE_VERSION=4.5.3
 TARGET_SDK_VERSION=35
 TARGET_SDK_VERSION_INRT=29
-VERSION_BUILD=3243
+VERSION_BUILD=3245
 VERSION_NAME=6.6.3 Alpha5
 VSCODE_EXT_REQUIRED_VERSION=1.0.8