There was a change a while ago which involved lazy loading for images on mobile. This broke stuff. The screenshot is of the English Wikipedia article on London Bridge station. Because all the inline images in the text to the right of the diagram have CSS display:block added to their lazy loading containers by Minerva, they end up being sandwiched between the text rows and breaking the diagram (normally RDT rows are exactly 20px high and there is no gap between each row's images).