Attach (recommended) or Link to PDF file here:
[FormDB2_fr.pdf](https://github.com/mozilla/pdf.js/files/7352426/FormDB2_fr.pdf)

Configuration:
- Web browser and its version: Firefox nightly
- Operating system and its version: linux debian

Steps to reproduce the problem:
1. Open the pdf
2. The image on the top of each pages is missing 

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/137465500-e8788893-f33d-4532-871d-43b464fa85f4.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/137465363-f2b35fe4-6776-45e9-b9e4-ccef6d9ad670.png)

captionHeight = this.caption[$getExtra](availableSpace).h;
        }
        const inputHeight = this.h - captionHeight - marginV - borderDims.h;
        ui.children[0].attributes.style.height = measureToString(inputHeight);
      } else {
        ui.children[0].attributes.style.height = "100%";
      }
    }
    if (aElement) {
      ui.children.push(aElement);
    }
    if (!caption) {
      if (ui.attributes.class) {
        
        ui.attributes.class.push("xfaLeft");
      }
      this.w = savedW;
      this.h = savedH;
      return HTMLResult.success(createWrapper(this, html), bbox);
    }
    if (this.ui.button) {
      if (style.padding) {
        delete style.padding;
      }
      if (caption.name === "div") {
        caption.name = "span";
      }
      ui.children.push(caption);
      return HTMLResult.success(html, bbox);
    } else if (this.ui.checkButton) {