Issue Summary

The occurs when uploading image/avif files as headers. Rather than displaying the image as is, Confluence renders the image with inverted colours, affecting the visibility.

Steps to Reproduce

1. Save an image using mimetype image/avif
2. Upload it to a Confluence page header.
3. Publish page

Expected Results

Image is displayed exactly as is

Actual Results

Colours are inverted and image is displayed incorrectly

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available