This is due to missing exchange rates. If no exchange rates are set, Manager will assume currencies to have exchange rates 1:1 which creates impression of different currencies simply being added up.
You will need to go to
Exchange rates and set them up but right now it is manual process. Wait for the next version which will automatically download exchange rates from the Internet. Then your figures will become correct.
(if you don’t see
Exchange rates under
Settings, you need to enable them by clicking
Customize button under