[Bug]: Downloading the image only renders part of the image

[syntactic]

Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits of both this extension and the webui

What happened?

When downloading the image, the PNG file generated is the correct dimensions, but only part of the image renders correctly. When I tried it, the downloaded image was missing the top and bottom portions of the canvas.

Downloaded image:

Image opened in Photoshop, showing transparent pixels where there shouldn't be transparency:

Steps to reproduce the problem

1. Go to the editor
2. Upload a background image
3. Click "Download Image"

What should have happened?

The entire canvas should have been rendered to the image. Even though the downloaded image has the same dimensions as the canvas, it is missing some of the image and appears to be transparent where it shouldn't be.

Commit where the problem happens

webui: 5ef669de080814067961f28357256e8fe27544f4
controlnet:
openpose-editor: cebe13e

What browsers do you use to access the UI ?

Mozilla Firefox, Apple Safari

Command Line Arguments

N/A

Console logs

N/A

Browser logs

N/A

Additional information

This was reproducible on the instance running on https://huchenlei.github.io/sd-webui-openpose-editor/

[spiraloid]

problem persists