First of all thank you for this wonderful theme.
My site was showing thumbnails at 16:9 ratio. Old posts are still showing at 16:9. Old posts are using the default image that is xyz.jpg but now whenever I create a new post and set a image as Featured image it showing square image instead of 16:9 aspect. it brings a image of size 500x500 and the name of the file will be xyz-500x500.jpg is there a way I can make featured image shown is xyz.jpg rather than xyz-500x500.jpg?
My site is cookingshooking.in
I ported my site from different theme to Lobster three days back, I used plugin called Media tools to set Thumbnails for all the previous posts. It assigned all the first image of the post as featured image. I am not sure does this plugin has to do with setting the size of the thumbnail.