2.2.6-dev-6305 fixed issue on displaying option title in invoice and shipment pdf

Author: Madhumalak

app/code/Magento/Sales/Model/Order/Pdf/Items/Invoice/DefaultInvoice.php

@@ -127,7 +127,8 @@ public function draw()
                     'feed' => 35,
                 ];
 
-                if ($option['value']) {
+                // Checking if option value is null not as empty
+                if ($option['value']!= null) {
                     if (isset($option['print_value'])) {
                         $printValue = $option['print_value'];
                     } else {

app/code/Magento/Sales/Model/Order/Pdf/Items/Shipment/DefaultShipment.php

@@ -89,7 +89,8 @@ public function draw()
                 ];
 
                 // draw options value
-                if ($option['value']) {
+                // Checking if option value is null not as empty
+                if ($option['value']!= null) {
                     $printValue = isset(
                         $option['print_value']
                     ) ? $option['print_value'] : $this->filterManager->stripTags(