scriptsig is an array in the front-end. It 's for designing.

public/src/js/filters.js

@@ -6,4 +6,10 @@ angular.module('insight')
       start = +start; //parse to int
       return input.slice(start);
     }
-});
+  })
+  .filter('split', function() {
+    return function(input, delimiter) {
+      var delimiter = delimiter || ',';
+      return input.split(delimiter);
+    }
+  });

public/views/transaction/tx.html

@@ -78,7 +78,9 @@
               <div class="panel-body" style="word-wrap:break-word" data-ng-class="{true: 'v_highlight', false: ''}[from_vin == true && v_index == vin.n]">
                 <small>
                   <strong>scriptSig</strong>
-                  {{vin.scriptSig.asm}}
+                  <span data-ng-repeat="item in vin.scriptSig.asm | split:' '">
+                    <span>{{item}}</span><br><br>
+                  </span>
                 </small>
               </div>
             </div>