So I was looking at the membership of each of the three big income groups and noticed they were still roughly 25/50/25 for poor, middle income, and wealthy on the voter groups panel in the center which seems strange since I moved my nation in a very socialist direction so I lifted quite a few poor people out of poverty. Yet the membership graphs show quite a bit of difference here because it says the poor make up a quarter of the populace when the graph shows what looks like a more accurate (very low like at or below 10%) percentage as seen in the picture. The wealthy were also apparently roughly at 25% based on the “Percentage of Population” even though the graph showed it more like ~50% of the population. Don’t know if it’s a bug or not but it just doesn’t seem to be adding up as you can see the in pictures.
EDIT: I double-checked the other voter groups and they all match with the percentages and what the membership graph shows. It’s only the three income groups which are showing this weird discrepancy.