The header on the Winter Bash knitting editor and the site footer shows 2018 when JavaScript is disabled, as the image between the <noscript>
tags isn't updated to 2019.
Header:
<noscript><img src="https://cdn.sstatic.net/Winterbash/img/header-large-main.png?v=2390b8b5f07d" /></noscript>
Specifically, this image – https://cdn.sstatic.net/Winterbash/img/header-large-main.png?v=2390b8b5f07d.
Footer:
<noscript><img src="https://cdn.sstatic.net/Winterbash/img/footer.png?v=c3c9a74a3dae" /></noscript>
Specifically, this image – https://cdn.sstatic.net/Winterbash/img/footer.png?v=c3c9a74a3dae.