Revert "Fix object newline when missing custom properties"

This reverts commit c246c82bfe.

js/entity/ObjectEntity.js

@@ -41,6 +41,7 @@ export default class ObjectEntity extends IEntity {
     static printKey = k => !k.startsWith(Configuration.subObjectAttributeNamePrefix) ? k : ""
     static attributeSeparator = "\n"
     static wrap = this.notWrapped
+    static trailing = true
     static attributes = {
         ...super.attributes,
         Class: ObjectReferenceEntity,
@@ -695,14 +696,14 @@ export default class ObjectEntity extends IEntity {
             + (Self.attributes.CustomProperties.ignored !== true && this.CustomProperties.ignored !== true
                 ? this.getCustomproperties().map(pin =>
                     deeperIndentation
-                    + attributeSeparator
                     + printKey("CustomProperties ")
                     + pin.serialize(insideString)
-                ).join("")
+                ).join(Self.attributeSeparator)
                 : ""
             )
             + attributeSeparator
-            + indentation + "End Object\n"
+            + indentation + "End Object"
+            + (this.trailing ? attributeSeparator : "")
         return result
     }
 }