we are using Odoo V12 community.

if we change rounding methond to "round globally" the calculation seems to be still wrong:

Invoice Example (Prices in each Line without tax, all Products have 20% Tax):

Line1 78.71  

Line2: 38.36

Line3: 13,56

Untaxed Amount: 130.63

Tax: 26.12

Total: 156.75

BUT: 20% from 130.63 is 26,126 which should be rounded 26,13 and not 26,12

how can i make odoo to compute the tax with "round globally" correct?

Using the other rounding Method (Rounding per Line) also not works (e.a. for invoices with many positions there is a big difference in total amounts)