I’m getting the same thing – images stretched to 100% height while width limited to 200 or whatever. It looked fine when I was logged in as admin, but screwed up when not logged in. The fix, above, did not help.
I bought the premium Recipe plugin, WP Ultimate Recipe Premium, and that seemed to bring Grids along with it. I have a “Grids” section on my sidebar now, but it is not listed in the plugins. Is this part of the Recipe plugin … or?
See at https://www.sailingphoenix.com/living-aboard/ if I haven’t gotten it working yet. A clone of that same grid is working here https://www.sailingphoenix.com/the-galley/ . so it works in some places and stretches the images in others.