I have a problem with a magento store 1.9.x

I configured tax for the products and i created a coupon code -30%.

When i proceed to Checkout with Paypal Pro, the imports for the products are incorrect.

**Example:**

**Product**: 100$ incl. tax  

**discount40** %: -30$  

**shipping**: 5$  

**tax**: 12.62$  

**TOTAL tax escl**. 62,38   

**TOTAL**: 75$  

**the Review in Paypal PRo:**

**Total item**: 51,97$  

**TAX**: 12,62$  

**Shipping**: 5$  

**TOTAL**: 69,59  

The problem appears only when   

- The tax is actived & configured  

- Customer use a Coupon Code  

- The payment method is PayPal Pro.  

If the customer use a different payment method or don't use a coupon code the problem does not occur.

I tested the problem on a clean installations (1.9.0.1 and 1.9.1) and with the same configurations, the problem appears.

It's a reported bug? how do I fix?

Thanks