Ticket #30521: 30521.diff

src/wp-content/themes/twentyfifteen/functions.php

@@ -265 +265 @@
                 $prevthumb = wp_get_attachment_image_src( get_post_thumbnail_id( $previous->ID ), 'post-thumbnail' );
                 $css .= '
                         .post-navigation .nav-previous { background-image: url(' . esc_url( $prevthumb[0] ) . '); }
-                        .post-navigation .nav-previous .post-title, .post-navigation .nav-previous .meta-nav { color: #fff; }
+                        .post-navigation .nav-previous .post-title, .post-navigation .nav-previous a:hover .post-title, .post-navigation .nav-previous .meta-nav { color: #fff; }
                         .post-navigation .nav-previous a:before { background-color: rgba(0, 0, 0, 0.4); }
                 ';
         }
@@ -274 +274 @@
                 $nextthumb = wp_get_attachment_image_src( get_post_thumbnail_id( $next->ID ), 'post-thumbnail' );
                 $css .= '
                         .post-navigation .nav-next { background-image: url(' . esc_url( $nextthumb[0] ) . '); }
-                        .post-navigation .nav-next .post-title, .post-navigation .nav-next .meta-nav { color: #fff; }
+                        .post-navigation .nav-next .post-title, .post-navigation .nav-next a:hover .post-title, .post-navigation .nav-next .meta-nav { color: #fff; }
                         .post-navigation .nav-next a:before { background-color: rgba(0, 0, 0, 0.4); }
                 ';
         }

src/wp-content/themes/twentyfifteen/inc/customizer.php

@@ -486 +486 @@
                 border-color: {{ data.border_color }};
         }
 
-        .post-navigation .nav-previous:not(.has-post-thumbnail) .nav-next:not(.has-post-thumbnail) {
+        .post-navigation div + div {
                 border-color: {{ data.border_color }};
         }