Added rtl.css.

projects/packages/post-list/src/class-post-list.php

@@ -48,7 +48,7 @@ public function register() {
 	}
 
 	/**
-	 * Enqueue scripts depending on the post-list query var.
+	 * Enqueue scripts.
 	 *
 	 * @param string $hook Page hook.
 	 */
@@ -60,11 +60,10 @@ public function enqueue_scripts( $hook ) {
 				array(),
 				self::PACKAGE_VERSION
 			);
-
 			wp_style_add_data(
 				'jetpack_posts_list_ui_style',
 				'rtl',
-				plugin_dir_url( __DIR__ ) . 'build/style.rtl.css'
+				plugin_dir_url( __DIR__ ) . './src/rtl.css'
 			);
 
 			add_filter( 'manage_posts_columns', array( $this, 'add_thumbnail_column' ) );

projects/packages/post-list/src/rtl.css

@@ -0,0 +1,9 @@
+/* Pull "Title" header name over in "Thumbnail"s place. */
+th.column-thumbnail + th a {
+	margin-right:-60px;
+}
+
+/* If thumbnail column has .hidden class. The entire column is toggled off. Don't pull "Title" header name over. */
+th.column-thumbnail.hidden + th a {
+	margin-right:0;
+}