If you try to view an article that has a graph, in the Android mobile app, the area where the graph should be will appear blank instead.
For example, try the article "The Falcon and the Winter Soldier", specifically the "Critical response" section: https://en.wikipedia.org/wiki/The_Falcon_and_the_Winter_Soldier#Critical_response. This is one example, but it happens on other articles that have graphs like this too.
On the desktop website, the graph here shows properly. But on the mobile app, there is a blank space where the graph should be. I have attached two screenshots showing how it appears on the desktop website and the Android app, respectively.
