www.theatlantic.com - design is broken

[karlcow]

URL: https://www.theatlantic.com/world/

Browser / Version: Firefox 94.0
Operating System: Mac OS X 10.15
Tested Another Browser: Yes Safari

Problem type: Design is broken
Description: Images not loaded
Steps to Reproduce:

1. Go to https://www.theatlantic.com/world/

Expected:
Thumbnail Images of articles are loaded

Actual:
Images are not loaded

View the screenshot

Browser Configuration

• None

From webcompat.com with ❤️

[karlcow]

<picture>
  <img
    class="o-media__img u-lazy--img lazyloaded"
    data-srcset="https://cdn.theatlantic.com/thumbor/UFZ2CLvZxCS0Memb3p0CbJgtpyo=/528x0:1878x1350/86x86/media/img/mt/2021/09/whowonsopner/original.jpg, https://cdn.theatlantic.com/thumbor/ijLTG4aj2JS9bkpSNJIpUM3Z89A=/528x0:1878x1350/172x172/media/img/mt/2021/09/whowonsopner/original.jpg 2x"
    alt="a mosaic of a formerly enslaved woman"
    srcset="
      https://cdn.theatlantic.com/thumbor/UFZ2CLvZxCS0Memb3p0CbJgtpyo=/528x0:1878x1350/86x86/media/img/mt/2021/09/whowonsopner/original.jpg,
      https://cdn.theatlantic.com/thumbor/ijLTG4aj2JS9bkpSNJIpUM3Z89A=/528x0:1878x1350/172x172/media/img/mt/2021/09/whowonsopner/original.jpg 2x
    "
  />
</picture>

Accessing
https://cdn.theatlantic.com/thumbor/ijLTG4aj2JS9bkpSNJIpUM3Z89A=/528x0:1878x1350/172x172/media/img/mt/2021/09/whowonsopner/original.jpg

I get

The image “https://cdn.theatlantic.com/thumbor/ijLTG4aj2JS9bkpSNJIpUM3Z89A=/528x0:1878x1350/172x172/media/img/mt/2021/09/whowonsopner/original.jpg” cannot be displayed because it contains errors.

HTTP/2 200 OK
content-type: image/avif
server: nginx/1.14.2
expires: Sat, 16 Oct 2021 12:00:39 GMT
etag: "2c5820a6b67e0a5d3bd6f6ae4a214e1b1341b8cb"
cache-control: max-age=2592000,public
via: 1.1 varnish, 1.1 varnish
accept-ranges: bytes
date: Fri, 17 Sep 2021 01:35:49 GMT
age: 48910
x-served-by: cache-dca17778-DCA, cache-sjc10067-SJC
x-cache: HIT, HIT
x-cache-hits: 1, 1
x-timer: S1631842549.220711,VS0,VE1
vary: Accept
content-length: 11741
X-Firefox-Spdy: h2

AVIF issue?

[karlcow]

Close as duplicate of https://bugzilla.mozilla.org/show_bug.cgi?id=1443863