It should display multiple metrics per segment as is done in Visitors > Overview:
I just stumbled across this issue again, while reviewing #19057.
The problem is, that the ecommerce sparklines have their very own handling, which we already discussed in #19057 to refactor.
As this wasn't done yet, we should maybe handle this issue with a higher priority, refactor the ecommerce sparklines to use the global sparkline methods. This should imho directly fix this issue as well.
Thanks @sgiehl we will consider this when we prioritise for the next milestone 👍🏽
We got another user asking about the Ecommerce comparison reports.
It looks as though because the sparklines don't show any comparison data it also isn't able to show the percentage differences in the reports the same way it does for other reports currently, i.e.:
Versus the ecommerce report comparison: