diff --git a/packages/editor/src/browser/doc-model/editor-document-model.ts b/packages/editor/src/browser/doc-model/editor-document-model.ts
index 62616b6d54..18c4485477 100644
--- a/packages/editor/src/browser/doc-model/editor-document-model.ts
+++ b/packages/editor/src/browser/doc-model/editor-document-model.ts
@@ -335,6 +335,13 @@ export class EditorDocumentModel extends Disposable implements IEditorDocumentMo
     if (this.monacoModel.isDisposed()) {
       return false;
     }
+    /**
+     * https://github.com/microsoft/vscode/blob/1.95.3/src/vscode-dts/vscode.d.ts#L14007
+     * 如果文档是只读状态，说明并不能进行保存, 自然不需要 dirty 状态
+     */
+    if (this.readonly) {
+      return false;
+    }
     return this._persistVersionId !== this.monacoModel.getAlternativeVersionId();
   }
 
diff --git a/packages/extension/src/hosted/api/vscode/doc/doc-manager.host.ts b/packages/extension/src/hosted/api/vscode/doc/doc-manager.host.ts
index ca00270a96..21e9b28c8e 100644
--- a/packages/extension/src/hosted/api/vscode/doc/doc-manager.host.ts
+++ b/packages/extension/src/hosted/api/vscode/doc/doc-manager.host.ts
@@ -179,15 +179,15 @@ export class ExtensionDocumentDataManagerImpl implements ExtensionDocumentDataMa
   $fireModelOptionsChangedEvent(e: IExtensionDocumentModelOptionsChangedEvent) {
     const document = this._documents.get(e.uri);
     if (document) {
+      if (isDefined(e.dirty)) {
+        document._acceptIsDirty(e.dirty);
+      }
       // 和 vscode 表现保持一致，接收到 languages 变更时，发送一个 close 和一个 open 事件
       if (isDefined(e.languageId) && e.languageId !== document._getLanguageId()) {
         document._acceptLanguageId(e.languageId);
         this._onDidCloseTextDocument.fire(document.document);
         this._onDidOpenTextDocument.fire(document.document);
       }
-      if (isDefined(e.dirty)) {
-        document._acceptIsDirty(e.dirty);
-      }
     }
   }
 
@@ -197,6 +197,7 @@ export class ExtensionDocumentDataManagerImpl implements ExtensionDocumentDataMa
     if (!document) {
       return;
     }
+    document._acceptIsDirty(dirty);
     document.onEvents({
       eol,
       versionId,
@@ -204,7 +205,6 @@ export class ExtensionDocumentDataManagerImpl implements ExtensionDocumentDataMa
       isRedoing,
       isUndoing,
     });
-    document._acceptIsDirty(dirty);
 
     let reason: vscode.TextDocumentChangeReason | undefined;
 
diff --git a/packages/monaco/src/browser/contrib/merge-editor/view/merge-editor.module.less b/packages/monaco/src/browser/contrib/merge-editor/view/merge-editor.module.less
index b6bc2b83a3..ba169a6ca5 100644
--- a/packages/monaco/src/browser/contrib/merge-editor/view/merge-editor.module.less
+++ b/packages/monaco/src/browser/contrib/merge-editor/view/merge-editor.module.less
@@ -321,7 +321,7 @@
       display: flex;
       align-content: center;
       height: inherit;
-      max-width: calc(100% - 120px);
+      max-width: calc(100% - 140px);
       display: flex;
 
       .title {