diff --git a/app/src/main/java/org/autojs/autojs/ui/edit/EditorView.kt b/app/src/main/java/org/autojs/autojs/ui/edit/EditorView.kt
index fca0271b..7b27ec37 100644
--- a/app/src/main/java/org/autojs/autojs/ui/edit/EditorView.kt
+++ b/app/src/main/java/org/autojs/autojs/ui/edit/EditorView.kt
@@ -72,7 +72,7 @@ import org.autojs.autojs.ui.edit.completion.CodeCompletionBar.OnHintClickListene
 import org.autojs.autojs.ui.edit.debug.DebugBar
 import org.autojs.autojs.ui.edit.editor.CodeEditor
 import org.autojs.autojs.ui.edit.editor.CodeEditor.CheckedPatternSyntaxException
-import org.autojs.autojs.ui.edit.editor.JavaScriptHighlighter.MAX_HIGHLIGHT_CHARS
+import org.autojs.autojs.ui.edit.editor.JavaScriptHighlighter
 import org.autojs.autojs.ui.edit.editor.LayoutHelper
 import org.autojs.autojs.ui.edit.keyboard.FunctionsKeyboardHelper
 import org.autojs.autojs.ui.edit.keyboard.FunctionsKeyboardView
@@ -420,6 +420,10 @@ class EditorView : LinearLayout, OnHintClickListener, ClickCallback, ToolbarFrag
                     findViewById<View>(R.id.redo).visibility = GONE
                     findViewById<View>(R.id.save).visibility = GONE
                 }
+                if (mLargeFileMode) {
+                    findViewById<View>(R.id.undo).visibility = GONE
+                    findViewById<View>(R.id.redo).visibility = GONE
+                }
                 if (!intent.getBooleanExtra(EXTRA_RUN_ENABLED, true)) {
                     findViewById<View>(R.id.run).visibility = GONE
                 }
@@ -698,7 +702,7 @@ class EditorView : LinearLayout, OnHintClickListener, ClickCallback, ToolbarFrag
     }
 
     private fun loadUri(uri: Uri): Observable<String> {
-        val streamThresholdBytes = MAX_HIGHLIGHT_CHARS
+        val streamThresholdBytes = LARGE_FILE_MODE_THRESHOLD
 
         val sizeOrNull = runCatching { queryContentLengthOrNull(uri) }.getOrNull()
         if (sizeOrNull != null && sizeOrNull >= streamThresholdBytes) {
@@ -1143,7 +1147,7 @@ class EditorView : LinearLayout, OnHintClickListener, ClickCallback, ToolbarFrag
             return
         }
 
-        val progressiveThreshold = MAX_HIGHLIGHT_CHARS
+        val progressiveThreshold = LARGE_FILE_MODE_THRESHOLD
         if (text.length > progressiveThreshold) {
             mLargeFileMode = true
             setInitialTextProgressively(text)
@@ -1175,7 +1179,7 @@ class EditorView : LinearLayout, OnHintClickListener, ClickCallback, ToolbarFrag
 
         // Re-highlight once after fast load, but only when size is within highlighter limit.
         // zh-CN: 快速加载完成后主动触发一次高亮, 但仅在文本大小不超过高亮上限时执行.
-        if (text.length <= MAX_HIGHLIGHT_CHARS) {
+        if (text.length <= JavaScriptHighlighter.MAX_HIGHLIGHT_CHARS) {
             post { editor.refreshHighlightTokensIfAllowed() }
         }
     }
@@ -2679,6 +2683,8 @@ class EditorView : LinearLayout, OnHintClickListener, ClickCallback, ToolbarFrag
         private const val MIN_CONFIDENCE_TO_WRITE_FILE = 90
         private val DEFAULT_CHARSET_TO_WRITE_FILE = StandardCharsets.UTF_8
 
+        private const val LARGE_FILE_MODE_THRESHOLD =  JavaScriptHighlighter.MAX_HIGHLIGHT_CHARS
+
         // Internal storage root (no external SD).
         // zh-CN: 内部存储根目录 (不访问外置 SD).
         private const val INTERNAL_STORAGE_ROOT: String = "/storage/emulated/0"
diff --git a/app/src/main/java/org/autojs/autojs/ui/edit/editor/CodeEditText.kt b/app/src/main/java/org/autojs/autojs/ui/edit/editor/CodeEditText.kt
index 88282b95..2e80e020 100644
--- a/app/src/main/java/org/autojs/autojs/ui/edit/editor/CodeEditText.kt
+++ b/app/src/main/java/org/autojs/autojs/ui/edit/editor/CodeEditText.kt
@@ -137,6 +137,15 @@ class CodeEditText : AppCompatEditText {
         }
         mCursorChangeCallbacks = CopyOnWriteArrayList()
 
+        // Prevent Android framework from saving/restoring huge editor text via View state.
+        // Otherwise minimizing the Activity may trigger TransactionTooLargeException for large files.
+        //
+        // zh-CN:
+        // 禁止系统通过 View state 自动保存/恢复超大的编辑器文本.
+        // 否则在最小化 Activity 时, 大文件很容易触发 TransactionTooLargeException.
+        isSaveEnabled = false
+        freezesText = false
+
         // Ensure selection is possible by default.
         // zh-CN: 默认确保可以进行文本选择.
         setTextIsSelectable(true)
@@ -590,9 +599,9 @@ class CodeEditText : AppCompatEditText {
 
             // Also drop selection-changed events entirely in large-text mode.
             // zh-CN: 大文本模式下直接丢弃 selection-changed 事件.
-            if (event.eventType == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) {
-                return
-            }
+            if (event.eventType == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED) return
+            if (event.eventType == AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED) return
+            if (event.eventType == AccessibilityEvent.TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY) return
         }
         super.sendAccessibilityEventUnchecked(event)
     }
diff --git a/version.properties b/version.properties
index 08a774cb..b87b4a10 100644
--- a/version.properties
+++ b/version.properties
@@ -1,5 +1,5 @@
-#Wed Feb 25 03:02:22 CST 2026
-BUILD_TIME=1771959742388
+#Wed Feb 25 16:44:22 CST 2026
+BUILD_TIME=1772009062191
 COMPILE_SDK_VERSION=36
 IMAGE_QUANT_CMAKE_VERSION=3.22.1
 IMAGE_QUANT_NDK_VERSION=26.1.10909125
@@ -27,6 +27,6 @@ RAPID_OCR_OPENCV_MOBILE_LABEL_VERSION=13
 RAPID_OCR_OPENCV_MOBILE_VERSION=4.5.3
 TARGET_SDK_VERSION=36
 TARGET_SDK_VERSION_INRT=29
-VERSION_BUILD=3752
+VERSION_BUILD=3753
 VERSION_NAME=6.7.0 Alpha21
 VSCODE_EXT_REQUIRED_VERSION=1.0.13