Magento2 : When Custom Price applied Product price is not displayed proper with tax on Cart

Question

Steps to reproduce:

1.Please configure tax settings and tax rules as seen in screenshots.

2.Now login in storefront using Demo Customer Access provided by Magento 
  ([email protected]).

3.Please integrate the below code to apply custom price.

Observer :

namespace Vendor\MyModule\Observer;

use Magento\Framework\Event\ObserverInterface;

class BindPriceToCart implements ObserverInterface
{

public function execute(\Magento\Framework\Event\Observer $observer)
{   
        $price = 100;
        $event = $observer->getEvent();
        $item = $event->getQuoteItem();
        $item->setCustomPrice($price);
        $item->setOriginalCustomPrice($price);
        return $this;
}    

}

Event : checkout_cart_product_add_after

Configurations that needs to be set :

Expected Result :

Actual Result :