Gravatar image not updating. Child Theme with "Cache Buster" necessary for updating

[mattyjoomla]

Description

Hi all, my nickname is mattyjoomla but meanwhile I am working wiht WordPress, too.
My website is currently under development. It is online but not indexed for search engines yet.
I love the Neve theme but yesterday I encountered an issue I could so far only solve with a child theme cache busting.

My updated gravatar image was immediately updated on all internal - backend - WP functions. Especially the "Comments" showed the correct image.
But it would not update on the frondend - blog - pages.

I carefully deleted all caches (CDN and LiteSpeed, browser cache) and used different browsers but nothing helped.

I did not find anything related in the database.

Changing the theme to the standard "Twenty twenty four" did update the gravatar image.

To solve this, I decided to create a Neve child theme and add the following code to the functions.php:

function force_gravatar_reload($url) {
if (strpos($url, 'gravatar.com') !== false) {
$url = preg_replace('/([?&]d=[^&]+)/', '', $url);
$url = preg_replace('/([?&]ver=[^&]+)/', '', $url);
$url .= (strpos($url, '?') === false ? '?' : '&');
$url .= 'ver=' . time();
}
return $url;
}
add_filter('get_avatar_url', 'force_gravatar_reload', 10, 1);

This does load the correct gravatar image, but:
I have to leave the code active. As soon as I "uncomment", the old image is displayed.

I thus think that Gravatar image caching is too aggressive in the theme.

Step-by-step reproduction instructions

Please see description.

Screenshots, screen recording, code snippet or Help Scout ticket

Code snippet to solve the issue:

function force_gravatar_reload($url) {
if (strpos($url, 'gravatar.com') !== false) {
$url = preg_replace('/([?&]d=[^&]+)/', '', $url);
$url = preg_replace('/([?&]ver=[^&]+)/', '', $url);
$url .= (strpos($url, '?') === false ? '?' : '&');
$url .= 'ver=' . time();
}
return $url;
}
add_filter('get_avatar_url', 'force_gravatar_reload', 10, 1);

Environment info

### wp-core ### version: 6.7.1 site_language: en_US user_language: en_US timezone: Europe/Berlin permalink: /%postname%/ https_status: true multisite: false user_registration: 0 blog_public: 0 default_comment_status: open environment_type: production user_count: 1 dotorg_communication: true ### wp-paths-sizes ### wordpress_path: /home/u568735133/domains/innerworldwisdom.com/public_html wordpress_size: 5.45 GB (5846658172 bytes) uploads_path: /home/u568735133/domains/innerworldwisdom.com/public_html/wp-content/uploads uploads_size: 48.70 MB (51067184 bytes) themes_path: /home/u568735133/domains/innerworldwisdom.com/public_html/wp-content/themes themes_size: 13.16 MB (13803815 bytes) plugins_path: /home/u568735133/domains/innerworldwisdom.com/public_html/wp-content/plugins plugins_size: 294.51 MB (308820217 bytes) fonts_path: /home/u568735133/domains/innerworldwisdom.com/public_html/wp-content/uploads/fonts fonts_size: directory not found database_size: 39.86 MB (41795584 bytes) total_size: 5.83 GB (6262144972 bytes) ### wp-dropins (1) ### object-cache.php: true ### wp-active-theme ### name: Neve Child (neve-child) version: 1.0 author: Matthias Kleespies author_website: https://innerworldwisdom.com parent_theme: Neve (neve) theme_features: core-block-patterns, hfg_support, widgets-block-editor, align-wide, automatic-feed-links, border, custom-background, custom-logo, custom-spacing, custom-units, customize-selective-refresh-widgets, editor-color-palette, fl-theme-builder-footers, fl-theme-builder-headers, fl-theme-builder-parts, header-footer-elementor, html5, lifterlms-sidebars, lifterlms, link-color, post-thumbnails, service_worker, starter-content, title-tag, menus, widgets theme_path: /home/u568735133/domains/innerworldwisdom.com/public_html/wp-content/themes/neve-child ### wp-parent-theme ### name: Neve (neve) version: 3.8.16 author: ThemeIsle author_website: https://themeisle.com theme_path: /home/u568735133/domains/innerworldwisdom.com/public_html/wp-content/themes/neve ### wp-themes-inactive (1) ### Twenty Twenty-Four: version: 1.3, author: the WordPress team ### wp-mu-plugins (3) ### Admin Tools for WordPress: version: 1.6.7, author: Akeeba Ltd akeeba-backup-coreupdate.php: author: (undefined), version: (undefined) Hostinger Smart Auto Updates: version: 1.0.5, author: Hostinger ### wp-plugins-active (32) ### Admin and Site Enhancements (ASE): version: 7.6.7.1, author: wpase.com Admin Tools Core for WordPress: version: 1.6.7, author: Akeeba Ltd Advanced Database Cleaner: version: 3.1.5, author: Younes JFR. 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license_location: option

Is the issue you are reporting a regression

No