Fixes #2288

Author: aksonov

dist/navigationStore.js

@@ -436,7 +436,7 @@ if(!tabBarComponent){
 tabBarComponent=tabBarPosition==='top'?function(props){return _react2.default.createElement(_reactNavigation.TabBarTop,_extends({},props,commonProps,{__source:{fileName:_jsxFileName,lineNumber:436}}));}:
 function(props){return _react2.default.createElement(_reactNavigation.TabBarBottom,_extends({},props,commonProps,{__source:{fileName:_jsxFileName,lineNumber:437}}));};
 }
-return(0,_reactNavigation.TabNavigator)(res,_extends({lazy:lazy,initialRouteName:initialRouteName,initialRouteParams:initialRouteParams,order:order},commonProps,{
+return(0,_reactNavigation.TabNavigator)(res,_extends({lazy:lazy,tabBarComponent:tabBarComponent,tabBarPosition:tabBarPosition,initialRouteName:initialRouteName,initialRouteParams:initialRouteParams,order:order},commonProps,{
 tabBarOptions:createTabBarOptions(commonProps),navigationOptions:createNavigationOptions(commonProps)}));
 }else if(drawer){
 return(0,_reactNavigation.DrawerNavigator)(res,_extends({initialRouteName:initialRouteName,contentComponent:contentComponent,order:order},commonProps));

src/navigationStore.js

@@ -436,7 +436,7 @@ class NavigationStore {
         tabBarComponent = tabBarPosition === 'top' ? (props) => <TabBarTop {...props} {...commonProps} /> :
           (props) => <TabBarBottom {...props} {...commonProps} />;
       }
-      return TabNavigator(res, { lazy, initialRouteName, initialRouteParams, order, ...commonProps,
+      return TabNavigator(res, { lazy, tabBarComponent, tabBarPosition, initialRouteName, initialRouteParams, order, ...commonProps,
         tabBarOptions: createTabBarOptions(commonProps), navigationOptions: createNavigationOptions(commonProps) });
     } else if (drawer) {
       return DrawerNavigator(res, { initialRouteName, contentComponent, order, ...commonProps });