Investment Performance by Account Grand Total

I have a YTD report with several investment accounts. At the bottom, there are two “Grand Total” lines, one for EUR and one for USD. The vast majority of my investments are in USD; EUR is very small. The problem is the Annualized Return numbers. They are clearly wrong. At firsts sight, they look inverted, i.e. the overall annualized return of the US accounts would be more plausible for the EUR accounts and vice versa. Has anybody else noticed this? Version 5.1.3-92b0665cf.

PS: the ROI numbers do look correct and are not inverted.