I switched to the basic theme and turned all plugins off and issue did not resolve. I lived on the display settings page before I contacted you trying each setting and comparing the settings between the two sites.
I’m wondering if something changed in the wordpress upgrade in how the image is resized for the List view. Two screen photos attached. The one with the text to the right is how both looked before I upgraded the problem one to 4.6.1. The one that still displays correctly is 4.6
The original size of both photos is 1024×683 at 72 dpi
Again, the issue is evident on your demo page. The event that displays correctly is a smaller width photo. Write/Speak/Code Work Night September 15 — But that photo is actual size which is not a solution.