fixed physics bug

lib/network/modules/InteractionHandler.js

@@ -257,6 +257,7 @@ class InteractionHandler {
             yFixed: object.options.fixed.y
           };
 
+          object.options.fixed = {};
           object.options.fixed.x = true;
           object.options.fixed.y = true;
 

lib/network/modules/components/shared/Label.js

@@ -37,7 +37,7 @@ class Label {
       parentOptions.color = newOptionsArray[2];
     }
     else if (typeof newOptions.font === 'object') {
-      util.fillIfDefined(parentOptions, newOptions.font, global);
+      util.fillIfDefined(parentOptions, newOptions.font, allowDeletion);
     }
     parentOptions.size = Number(parentOptions.size);
   }

lib/util.js

@@ -123,7 +123,7 @@ exports.fillIfDefined = function (a, b, allowDeletion = false) {
     if (b[prop] !== undefined) {
       if (typeof b[prop] !== 'object') {
         if ((b[prop] === undefined || b[prop] === null) && a[prop] !== undefined && allowDeletion === true) {
-          a[prop] = b[prop];
+          delete a[prop];
         }
         else {
           a[prop] = b[prop];
@@ -218,7 +218,7 @@ exports.selectiveDeepExtend = function (props, a, b, allowDeletion = false) {
             a[prop] = {};
           }
           if (a[prop].constructor === Object) {
-            exports.deepExtend(a[prop], b[prop]);
+            exports.deepExtend(a[prop], b[prop], false, allowDeletion);
           }
           else {
             if ((b[prop] === undefined || b[prop] === null) && a[prop] !== undefined && allowDeletion === true) {