I'm seeing incomplete thumbnails images for 90% of the searches I do. Here is an example under shopping results:

Each thumbnail displays this image, which is incorrect (as you can see in the screenshots below):

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAD1BMVEVMaXH///////////////9FpdmZAAAABXRSTlMAI6b+V9IpL9cAAAB5SURBVHgBzdMBBoBAFEXRV1pAtIRZQU0LiPa/pyiuXD6AemA4rgE/v93Q+rOEx72lF9Aq6DXktbOAyUUIDAS7gOAQEERAYCAwEBgIDATPAAIDgYHAQKDPCQwEBgIDgWEgcNEIBCOBIHMF+QqYz0DbdDhs1akRzPnrLiR1Pf4dNEJhAAAAAElFTkSuQmCC"