Attach (recommended) or Link to PDF file here:
https://s3.eu-west-1.amazonaws.com/scai-dev.website.com/tmp/8ab8b56a-fa91-11eb-8d74-0242ac110004.pdf

Hi,
Please see an incorrect canvas rendering for the following document - page 9 specifically. It reproduces on https://mozilla.github.io/pdf.js/web/viewer.html (tried with Chrome). Other pages in this document look pretty much the same but the problem is on page 9 only.

Original screenshot:
![image](https://user-images.githubusercontent.com/23075641/129066656-7bb2fb56-2b88-4f40-8e67-b95bdeb9e521.png)


PDF JS:

![image](https://user-images.githubusercontent.com/23075641/129066734-56503a5c-413c-49c1-9e1c-470da3a642ed.png)

if (!this.contentVisible) {
      return;
    }
    this.save();
    const currentCtx = this.ctx;
    
    
    
    
    
    
    
    
    
    
    
    
    
    if (!group.isolated) {
      info("TODO: Support non-isolated groups.");
    }
    
    
    if (group.knockout) {
      warn("Knockout groups not supported.");
    }