One year later, this is still a problem in Ufile 2023. The T5 slip is downloaded from CRA and, if box 27 on the T5 indicates that all the amounts are in another currency such as USD, the USD amounts are just accepted as Canadian dollar amounts by Ufile. There is no warning within Ufile and Box 27 doesn't even appear within the software.
To avoid misreporting income, users need to separately check the T5 for a box 27. Foreign currency amounts on a T5 need to be multiplied by the Bank of Canada annualized exchange rate for that currency. Those exchange rates are available here: https://www.bankofcanada.ca/rates/exchange/annual-average-exchange-rates/
