Topic: Credit Note incorrect VAT

I have a partial credit note to enter.  I select the first item from the original invoice and it is added to the credit note with the correct VAT.  When I select the second item the item is added and the total of items is correct but the VAT is not updated.  It has the amount for the first item.  Anyone seen this?

I have using 2.3.19 and have added the patch for gl_bank.php.