diff --git a/wp-includes/l10n.php b/wp-includes/l10n.php
index 1f3532a40d..13d307fca9 100644
--- a/wp-includes/l10n.php
+++ b/wp-includes/l10n.php
@@ -1207,7 +1207,15 @@ function load_script_textdomain( $handle, $domain = 'default', $path = '' ) {
 		$relative = trim( $relative, '/' );
 		$relative = explode( '/', $relative );
 
-		$languages_path = WP_LANG_DIR . '/plugins';
+		/*
+		 * Ensure correct languages path when using a custom `WP_PLUGIN_DIR` / `WP_PLUGIN_URL` configuration.
+		 * See https://core.trac.wordpress.org/ticket/60891 and https://core.trac.wordpress.org/ticket/62016.
+		 */
+		$plugins_dir = array_slice( explode( '/', $plugins_url['path'] ), 2 );
+		$plugins_dir = trim( $plugins_dir[0], '/' );
+		$dirname     = $plugins_dir === $relative[0] ? 'plugins' : 'themes';
+
+		$languages_path = WP_LANG_DIR . '/' . $dirname;
 
 		$relative = array_slice( $relative, 2 ); // Remove plugins/<plugin name> or themes/<theme name>.
 		$relative = implode( '/', $relative );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 2b0f2a659c..05b1796e8e 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-59125';
+$wp_version = '6.7-alpha-59126';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.