How to Solve 3rd-party CSS Menu Conflict

MailPoet has a no-conflict system preventing other scripts and styles from breaking our admin pages, so we currently block the loading of 3rd-party plugin assets on MailPoet admin pages.

As I consequence, you may see some 3rd-party plugin icon image way bigger in the WordPress dashboard sidebar menu when on navigating through the MailPoet admin pages:

As a workaround, we have two filters that can be used to whitelist scripts and styles, but you'll need to find out the domain of your theme or plugin to allow them to work on MailPoet admin pages.

These filters should be added to the website's  functions.php:

For scripts:

add_filter('mailpoet_conflict_resolver_whitelist_script', function ($scripts) {
  $scripts[] = 'modern-events-calendar-lite'; // plugin name to whitelist
  return $scripts;
});

For styles:

add_filter('mailpoet_conflict_resolver_whitelist_style', function ($whitelistedStyles) {
  $whitelistedStyles[] = 'modern-events-calendar-lite'; // plugin name to whitelist
  return $whitelistedStyles;
});

Please change “ modern-events-calendar-lite” with the plugin name.