Avoid auto-fitting if there are zero entities in the world

macrovision.js

@@ -3540,7 +3540,10 @@ function checkFitWorld() {
 }
 
 function fitWorld(manual = false, factor = 1.1) {
-    fitEntities(entities, factor);
+    if (Object.keys(entities).length > 0) {
+        fitEntities(entities, factor);
+    }
+    
 }
 
 function fitEntities(targetEntities, manual = false, factor = 1.1) {