Make sites: Site title link has incorrect colors on dark background

[juanfra]

On Make sites (e.g., make.wordpress.org/core, make.wordpress.org/meta), the site title link in the local navigation bar has accessibility issues due to incorrect text colors on a dark background. It happens both on the "home" (link text color is black) and when visiting posts (link text color is blue).

To reproduce:

1. Visit ​https://make.wordpress.org/core/ or ​https://make.wordpress.org/meta
2. Observe the site title link color in the navigation bar (.wp-block-wporg-local-navigation-bar .wp-block-site-title a)
3. Check contrast ratio, it fails accessibility standards.
4. Repeat the same process but on a post page for any of the make sites, and confirm the same shows the text in blue.

[joedolson]

See also: ​https://github.com/WordPress/wporg-main-2022/issues/661

[SergeyBiryukov]

Looks like these inline styles have been recently removed from the page, causing the issue:

.wp-elements-1b51aea1fd24d0aef3e0b3e7d65bcfef a:where(:not(.wp-element-button)) {
  color:var(--wp--preset--color--white);
}
.wp-elements-1b51aea1fd24d0aef3e0b3e7d65bcfef a:where(:not(.wp-element-button)):hover {
  color:var(--wp--preset--color--white);
}

[dd32]

See also: ​https://github.com/WordPress/wporg-main-2022/issues/661

Related to this is ​https://x.com/davebloomdev/status/2037964248358207911

The fix was to re-enable the Gutenberg plugin on WordPress.org homepage.

Re-enabling gutenberg fixes these titles, but no-one is sure why/what/how the fault is.
I've delayed re-enabling Gutenberg on make.w.org until someone can figure out what's happening.

Best guess is it's something related to how the way Gutenberg removes Core filters in elements.php - maybe a priority clash is occurring.
​https://github.com/WordPress/gutenberg/blob/trunk/lib/block-supports/elements.php#L262-L263