Issue with cities QOL numbers zooming in/out!

Zooming in and out of the map changes the enemy cities' 6 values listed directly under the city name: happiness, health, knowledge, prosperity, security, culture. Zoom out and all will be ~50. Zoom in and they will change to what I assume are the real values. This happens at various zoom levels all over the map. I'm assuming it is a bug. What do you reckon?