diff --git a/src/question_comment.ts b/src/question_comment.ts
index 453678f58e..f12a4d4f11 100644
--- a/src/question_comment.ts
+++ b/src/question_comment.ts
@@ -60,13 +60,16 @@ export class QuestionCommentModel extends QuestionTextBase {
    * @see autoGrow
    */
   public get allowResize(): boolean {
-    return this.getPropertyValue("allowResize") && (this.survey && this.survey.allowResizeComment);
+    return this.getPropertyValue("allowResize");
   }
   public set allowResize(val: boolean) {
     this.setPropertyValue("allowResize", val);
   }
+  public get renderedAllowResize(): boolean {
+    return this.allowResize && (this.survey && this.survey.allowResizeComment);
+  }
   public get resizeStyle() {
-    return this.allowResize ? "both" : "none";
+    return this.renderedAllowResize ? "both" : "none";
   }
   public getType(): string {
     return "comment";
diff --git a/tests/jsonobjecttests.ts b/tests/jsonobjecttests.ts
index dd18a33f2e..d67a351807 100644
--- a/tests/jsonobjecttests.ts
+++ b/tests/jsonobjecttests.ts
@@ -3015,4 +3015,21 @@ QUnit.test("defaultValue for matrix rowTitleWidth and columnMinWidth properties"
   assert.equal(matrix.columnMinWidth, "220px", "columnMinWidth");
   Serializer.findProperty("matrix", "rowTitleWidth").defaultValue = undefined;
   Serializer.findProperty("matrix", "columnMinWidth").defaultValue = undefined;
+});
+
+QUnit.test("Check that .toJSON returns clean structure for all question types", function (assert) {
+  const name = "q";
+  const etalon = { name };
+  const classes = Serializer["classes"];
+
+  for (const prop in classes) {
+    const cls = classes[prop];
+    const qModel: any = Serializer.createClass(cls.name);
+    if (!!qModel) {
+      qModel.name = name;
+      if (qModel.isQuestion && qModel.getType() === cls.name) {
+        assert.deepEqual(qModel.toJSON(), etalon, `JSON for ${cls.name} is clean`);
+      }
+    }
+  }
 });
\ No newline at end of file
diff --git a/tests/surveytests.ts b/tests/surveytests.ts
index e20824e499..ab3d0a6f44 100644
--- a/tests/surveytests.ts
+++ b/tests/surveytests.ts
@@ -15044,12 +15044,12 @@ QUnit.test("survey.allowResizeComment", function (assert) {
   let comment2 = survey.getQuestionByName("comment2");
 
   assert.equal(survey.allowResizeComment, false);
-  assert.equal(comment1.allowResize, false);
-  assert.equal(comment2.allowResize, false);
+  assert.equal(comment1.renderedAllowResize, false);
+  assert.equal(comment2.renderedAllowResize, false);
 
   survey.allowResizeComment = true;
-  assert.equal(comment1.allowResize, true);
-  assert.equal(comment2.allowResize, false);
+  assert.equal(comment1.renderedAllowResize, true);
+  assert.equal(comment2.renderedAllowResize, false);
 });
 QUnit.test("utils.increaseHeightByContent", assert => {
   let element = {