Bubble Map Icon Sizing

I’m trying to set up my map to have different icons show based on the type of location. I’ve followed the directions to set it up to be data dependent and uploaded an icon image for each of my locations but the icons come out huge! I even tried uploading a smaller version (blue icon) an it automatically scaled up.

When I switch to the custom icon, the display is fine. Is this a bug? anyone else have this problem with the map element? There was a topic a month ago, but no comments or resolution.