lvgl: In v9 Parent and child elements of the same size, but the child element cannot completely cover the parent element

Describe the bug

Set the size of the parent element to 200X200, the background to red, the child element to a 100X100 picture, the child element is scaled to 200X200, As a result, the child element does not completely cover the parent element.

void lv_image_test(void){
   int ww = 200;
   lv_obj_t* native = lv_obj_create(lv_scr_act());
   lv_obj_remove_style_all(native);
   lv_obj_set_width(native,ww);
   lv_obj_set_height(native,ww);
   lv_obj_set_pos(native, 100, 50); 

   lv_image_t* img_ = lv_img_create(native);
   lv_obj_remove_style_all(img_);
   lv_obj_center(img_);
   lv_img_set_src(img_, "00.jpeg");
   lv_obj_set_width(img_,ww);
   lv_obj_set_height(img_,ww);

   lv_obj_set_style_bg_color(img_, lv_palette_main(LV_PALETTE_RED), LV_PART_MAIN);     
   lv_obj_set_style_bg_opa(img_, LV_OPA_80, LV_PART_MAIN); 

   uint16_t zoomHeight = ww * LV_SCALE_NONE / img_->h;
   img_->zoom = zoomHeight; 
  lv_img_set_size_mode(img_, LV_IMAGE_SIZE_MODE_REAL);
}

00.jpeg

Expected behavior

The child element completely covers the parent element.

Screenshots or video