SpigotCore_Main/src/de/steamwar/entity/REntity.java

@@ -251,7 +251,7 @@ public class REntity {
             packetSink.accept(getDataWatcherPacket(nameWatcher, FlatteningWrapper.impl.formatDisplayName(displayName), nameVisibleWatcher, true));
         }
 
-        if(noGravity)
+        if(Core.getVersion() > 8 && noGravity)
             packetSink.accept(getDataWatcherPacket(noGravityDataWatcher,this.noGravity));
     }