Incorrect Tax output in order managment

-- HikaShop version -- : 2.6.4
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-- PHP version -- : 3.6.30
-- Browser(s) name and version -- : Chrome 56.0.2924.87

Hi!
Tax rate 19%, total is correct, subtotal is correct, but tax is incorrect.
The problem occurred when changing the cost of delivery.

On 3434.png lfm. means price for meter.
Alu Wand Profil 160 gr. price Is calculated as follows: 0.95*80*2.5m=190 and 226.1 with tax (19%)

Thanks.

Before editing the order, the tax (Ust.) was correct (63,27 €), but after making changes, it became 28,39 €.
Subtotal = 333€ - correct;
Total = 396,27€ - correct;
Tax = 28,39€ - incorrect and i don't understand where does this figure come from.

Hi,
Initially, the delivery and delivery tax were 0. Later, we calculated the shipping cost for the goods and tried to correct the shipping cost by 65 to send a new invoice to the customer. There was a problem with the tax, tried to return to 0 and now we have what we have.

I did this and the total tax display is correct. Thanks.