Bug on Spending tab (iOS)

Just a quick weird bug I noticed this afternoon.

On the Spending tab, at the top of the screen, you get all the amounts you’ve spent month by month, obviously you can drag your finger across and swipe from month to month, but if you try and tap on amounts that are either side of the month in the centre, it starts to move across but then always jumps back to the month you were viewing.

It’s literally not app breaking or even awful, but just thought I’d flag it.

Thanks in advance!

iPhone X, iOS 11.2.5