Filter "affine" + Transition "luma" Out of the wrong picture, bug

Here's my case code C++

。。。
  Producer* producer1 = new Producer(profile,"avformat", "/Users/linximing/Movies/55_1726454285_raw.mp4");
 producer1->set_in_and_out(400, 440);
        {
            Mlt::Filter f =  Mlt::Filter(profile,"affine");
            f.set("transition.rect", "0/0:50%x50% 1");
            f.set("transition.valign", "m");
            f.set("transition.halign", "c");
            f.set("transition.distort", 0);
            f.set("transition.fill", 1);
            producer1->attach(f);
        }
 Producer producer3 = Producer(profile,"color", "#990000");
    producer3.set_in_and_out(0, 20);
    Mlt::Playlist playlist(profile);
      playlist.append(producer3);  
  playlist.append(*producer1); 

  Mlt::Transition transition2(profile, "luma");
    int targetIndex = 0;
    playlist.mix(targetIndex, 10);
    playlist.mix_add(targetIndex + 1, &transition2);
。。。

A red error message appears at the place of transition, and the effect of zooming out does not take effect. Can anyone tell me where this bug is?

The issue names no repository file or test; start by reproducing the supplied C++ case with the affine filter, color producer, playlist mix, and luma transition. Trace how the filter and transition are applied to playlist items, and consider the issue done when the transition affects the intended picture and the affine zoom remains visible.