Unexpected spacing at the end of a textview when using child widgets.

In my project I have a need to add child widgets into TextView. Anchor is created at the end iter, then I add widget using add_child_at_anchor(...).

Here is one of the places where I encounter this bug:

I expected TextView to end at the edge of the picture, but it has additional height of the picture.

Node: (I removed the picture to make code smaller)

transform {
  transform: translate(0, 34);
  child: container {
    color {
      bounds: 0 0 560 597;
      color: rgb(30,30,30);
    }
    container {
      container {
        text {
          color: rgb(255,255,255);
          font: "Noto Sans 14.667px";
          glyphs: "Spoiler body";
          offset: 0 296;
          hint-metrics: on;
        }
        cairo {
          bounds: 0 0 466 300;
          pixels: url("data:image/png;base64,\
iVBORw0KGgoAAAANSUhEUgAAAdIAAAEsCAYAAAB3+DJfAAAABmJLR0QA/wD/AP+gvaeTAAACNUlE\
QVR4nO3BMQEAAADCoPVPbQ0PoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfg2KBAABCu/M\
DAAAAABJRU5ErkJggg==\
");
          script: url("data:;base64,\
JSFDYWlyb1NjcmlwdAo=\
");
        }
      }
      transform {
        transform: translate(86, 0);
        child: texture {
          bounds: 0 0 379 296;
          texture: url("data:image/png;base64,\
iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAAXNSR0IArs4c6QAAAARjSUNQAQ0A\
AZxpOzIAAAApSURBVBiVY/zPcOY/AxpgZDBhRBdjQhfABQZQIYajGRgYGLB5cCh4BgDPjgXd7dTX\
FQAAAABJRU5ErkJggg==\
");
        }
      }
    }
  }
}