Balance trend changes due to exchange rate fluctuations

I can see a dip in the balance trend widget even though I have no expenses that day. I have multi currency accounts, so if the dip is due to exchange rate changes, I'd prefer not to reflect it in the balance trend although it should still affect net worth.

At a minimum, the tooltip should explain the change, e.g. ‘Exchange rate: −6K’. The same should apply to funds to distinguish actual NAV changes from exchange rate fluctuations.