Index: src/wp-admin/includes/plugin-install.php
===================================================================
--- src/wp-admin/includes/plugin-install.php	(revision 29748)
+++ src/wp-admin/includes/plugin-install.php	(working copy)
@@ -324,7 +324,7 @@
 	$api = plugins_api( 'plugin_information', array(
 		'slug' => wp_unslash( $_REQUEST['plugin'] ),
 		'is_ssl' => is_ssl(),
-		'fields' => array( 'banners' => true, 'reviews' => true )
+		'fields' => array( 'banners' => true, 'reviews' => true, 'contributors' => true )
 	) );
 
 	if ( is_wp_error( $api ) ) {
@@ -470,19 +470,17 @@
 			<h3><?php _e( 'Contributors' ); ?></h3>
 			<ul class="contributors">
 				<?php
-				foreach ( (array) $api->contributors as $contrib_username => $contrib_profile ) {
-					if ( empty( $contrib_username ) && empty( $contrib_profile ) ) {
-						continue;
+				foreach ( (array) $api->contributors as $contrib_username => $contrib ) {
+					$contrib_username = sanitize_user( $contrib_username );
+					echo '<li>';
+					if ( $contrib['profile'] ) {
+						echo '<a href="' . esc_url( $contrib['profile'] ) . '" target="_blank">';
 					}
-					if ( empty( $contrib_username ) ) {
-						$contrib_username = preg_replace( '/^.+\/(.+)\/?$/', '\1', $contrib_profile );
+					echo "<img src='" . esc_url( $contrib['avatar'] . '&s=36' ) . "' width='18' height='18' />{$contrib_username}";
+					if ( $contrib['profile'] ) {
+						echo '</a>';
 					}
-					$contrib_username = sanitize_user( $contrib_username );
-					if ( empty( $contrib_profile ) ) {
-						echo "<li><img src='https://wordpress.org/grav-redirect.php?user={$contrib_username}&amp;s=36' width='18' height='18' />{$contrib_username}</li>";
-					} else {
-						echo "<li><a href='{$contrib_profile}' target='_blank'><img src='https://wordpress.org/grav-redirect.php?user={$contrib_username}&amp;s=36' width='18' height='18' />{$contrib_username}</a></li>";
-					}
+					echo '</li>';
 				}
 				?>
 			</ul>