diff --git a/includes/admin/post-types/class-wc-admin-cpt-shop_order.php b/includes/admin/post-types/class-wc-admin-cpt-shop_order.php
index d7f086cca70..22b23f64e35 100644
--- a/includes/admin/post-types/class-wc-admin-cpt-shop_order.php
+++ b/includes/admin/post-types/class-wc-admin-cpt-shop_order.php
@@ -566,15 +566,6 @@ class WC_Admin_CPT_Shop_Order extends WC_Admin_CPT {
 
 		// Search orders
 		$post_ids = array_unique( array_merge(
-			$wpdb->get_col(
-				$wpdb->prepare( "
-					SELECT post_id
-					FROM {$wpdb->postmeta}
-					WHERE meta_key IN ('" . implode( "','", $search_fields ) . "') AND meta_value LIKE '%%%s%%'
-					",
-					esc_attr( $_GET['s'] )
-				)
-			),
 			$wpdb->get_col(
 				$wpdb->prepare( "
 					SELECT p1.post_id
@@ -584,8 +575,10 @@ class WC_Admin_CPT_Shop_Order extends WC_Admin_CPT {
 						( p1.meta_key = '_billing_first_name' AND p2.meta_key = '_billing_last_name' AND CONCAT(p1.meta_value, ' ', p2.meta_value) LIKE '%%%s%%' )
 					OR
 						( p1.meta_key = '_shipping_first_name' AND p2.meta_key = '_shipping_last_name' AND CONCAT(p1.meta_value, ' ', p2.meta_value) LIKE '%%%s%%' )
+					OR 
+						( p1.meta_key IN ('" . implode( "','", $search_fields ) . "') AND p1.meta_value LIKE '%%%s%%' )
 					",
-					esc_attr( $_GET['s'] ), esc_attr( $_GET['s'] )
+					esc_attr( $_GET['s'] ), esc_attr( $_GET['s'] ), esc_attr( $_GET['s'] )
 				)
 			),
 			$wpdb->get_col(
diff --git a/includes/api/class-wc-api-server.php b/includes/api/class-wc-api-server.php
index 8d78bf7bfd0..abba1b698d8 100644
--- a/includes/api/class-wc-api-server.php
+++ b/includes/api/class-wc-api-server.php
@@ -576,7 +576,7 @@ class WC_API_Server {
 	}
 
 	/**
-	 * Returns the request URL with the page query parmeter set to the specified page
+	 * Returns the request URL with the page query parameter set to the specified page
 	 *
 	 * @since 2.1
 	 * @param int $page
@@ -590,8 +590,10 @@ class WC_API_Server {
 		// add provided page query param
 		$request = urldecode( add_query_arg( 'page', $page, $request ) );
 
-		// return full URL
-		return get_woocommerce_api_url( str_replace( '/wc-api/v1/', '', $request ) );
+		// get the home host
+		$host = parse_url( get_home_url(), PHP_URL_HOST );
+
+		return set_url_scheme( "http://{$host}{$request}" );
 	}
 
 	/**
diff --git a/includes/shipping/flat-rate/class-wc-shipping-flat-rate.php b/includes/shipping/flat-rate/class-wc-shipping-flat-rate.php
index ad2cb449a26..49173d4913c 100644
--- a/includes/shipping/flat-rate/class-wc-shipping-flat-rate.php
+++ b/includes/shipping/flat-rate/class-wc-shipping-flat-rate.php
@@ -256,7 +256,15 @@ class WC_Shipping_Flat_Rate extends WC_Shipping_Method {
 				$extra_rate['label']	= $this_option[0];
 				$this_cost				= $this_option[1];
 
-				if (preg_match('/(\d+\.?\d*)\s*(\+|-)\s*(\d+\.?\d*)\%/', $this_cost, $this_cost_matches)) {
+				$pattern = 
+					'/' .           // start regex
+					'(\d+\.?\d*)' . // capture digits, optionally capture a `.` and more digits
+					'\s*' .         // match whitespace
+					'(\+|-)' .      // capture the operand
+					'\s*'.          // match whitespace
+					'(\d+\.?\d*)'.  // capture digits, optionally capture a `.` and more digits
+					'\%/';          // match the percent sign & end regex
+				if ( preg_match( $pattern, $this_cost, $this_cost_matches ) ) {
 					$this_cost_mathop = $this_cost_matches[2];
 					$this_cost_percents = $this_cost_matches[3] / 100;
 					$this_cost = $this_cost_matches[1];
@@ -280,12 +288,7 @@ class WC_Shipping_Flat_Rate extends WC_Shipping_Method {
 						if ( $this_cost_percents ) {
 							foreach ( $this->find_shipping_classes( $package ) as $shipping_class => $items ){
 								foreach ( $items as $item_id => $values ) {
-									if ($this_cost_mathop == '+') {
-										$this_cost += $this_cost_percents * $values['line_total'];
-									}
-									else {
-										$this_cost -= $this_cost_percents * $values['line_total'];
-									}
+									$this_cost = $this->calc_percentage_adjustment( $this_cost, $this_cost_percents, $this_cost_mathop, $values['line_total'] );
 								}
 							}
 						}
@@ -296,22 +299,14 @@ class WC_Shipping_Flat_Rate extends WC_Shipping_Method {
 						// Factor $this_cost by the percentage if provided.
 						if ( $this_cost_percents ) {
 							foreach ( $package['contents'] as $item_id => $values ) {
-								if ($this_cost_mathop == '+') {
-									$this_cost += $this_cost_percents * $values['line_total'];
-								} else {
-									$this_cost -= $this_cost_percents * $values['line_total'];
-								}
+								$this_cost = $this->calc_percentage_adjustment( $this_cost, $this_cost_percents, $this_cost_mathop, $values['line_total'] );
 							}
 						}
 					break;
 					case  'order' :
 						// Factor $this_cost by the percentage if provided.
 						if ( $this_cost_percents ) {
-							if ($this_cost_mathop == '+') {
-								$this_cost += $this_cost_percents * $package['contents_cost'];
-							} else {
-								$this_cost -= $this_cost_percents * $package['contents_cost'];
-							}
+							$this_cost = $this->calc_percentage_adjustment( $this_cost, $this_cost_percents, $this_cost_mathop, $package['contents_cost'] );
 						}
 					break;
 				}
@@ -328,6 +323,27 @@ class WC_Shipping_Flat_Rate extends WC_Shipping_Method {
 	}
 
 
+	/**
+	 * Calculate the percentage adjustment for each shipping rate.
+	 *
+	 * @access public
+	 * @param  float  $cost
+	 * @param  float  $percent_adjustment
+	 * @param  string $percent_operator
+	 * @param  float  $base_price
+	 * @return float
+	 */
+	function calc_percentage_adjustment( $cost, $percent_adjustment, $percent_operator, $base_price ) {
+		if ( '+' == $percent_operator ) {
+			$cost += $percent_adjustment * $base_price;
+		} else {
+			$cost -= $percent_adjustment * $base_price;
+		}
+
+		return $cost;
+	}
+
+
 	/**
 	 * order_shipping function.
 	 *
diff --git a/includes/shortcodes/class-wc-shortcode-my-account.php b/includes/shortcodes/class-wc-shortcode-my-account.php
index 4c19cf808f7..6d764007f5c 100644
--- a/includes/shortcodes/class-wc-shortcode-my-account.php
+++ b/includes/shortcodes/class-wc-shortcode-my-account.php
@@ -212,7 +212,7 @@ class WC_Shortcode_My_Account {
 
 			wc_add_notice( __( 'Enter a username or e-mail address.', 'woocommerce' ), 'error' );
 
-		} elseif ( strpos( $_POST['user_login'], '@' ) ) {
+		} elseif ( strpos( $_POST['user_login'], '@' ) && apply_filters( 'woocommerce_get_username_from_email', true ) ) {
 
 			$user_data = get_user_by( 'email', trim( $_POST['user_login'] ) );
 
@@ -223,7 +223,7 @@ class WC_Shortcode_My_Account {
 
 			$login = trim( $_POST['user_login'] );
 
-			$user_data = get_user_by('login', $login );
+			$user_data = get_user_by( 'login', $login );
 		}
 
 		do_action('lostpassword_post');
diff --git a/templates/cart/cart-item-data.php b/templates/cart/cart-item-data.php
index a77a5b5118d..9ab4685df3f 100644
--- a/templates/cart/cart-item-data.php
+++ b/templates/cart/cart-item-data.php
@@ -15,7 +15,7 @@ if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
 		foreach ( $item_data as $data ) :
 			$key = sanitize_text_field( $data['key'] );
 	?>
-		<dt class="variation-<?php echo $key; ?>"><?php echo wp_kses_post( $data['key'] ); ?>:</dt>
-		<dd class="variation-<?php echo $key; ?>"><?php echo wp_kses_post( wpautop( $data['value'] ) ); ?></dd>
+		<dt class="variation-<?php echo sanitize_html_class( $key ); ?>"><?php echo wp_kses_post( $data['key'] ); ?>:</dt>
+		<dd class="variation-<?php echo sanitize_html_class( $key ); ?>"><?php echo wp_kses_post( wpautop( $data['value'] ) ); ?></dd>
 	<?php endforeach; ?>
 </dl>