Yes, sort of. I agree setting the image sizes is the issue. The top news section has similiarly proportioned featured images to start with, so that’s expected behaviour.
I’ve set the original, differently proportioned featured images for the Yurts and Bus pages in the lower section. This is where the issue is, trying to override differently proportioned featured images. The sizes per row change – the middle row of the lower section is taller than the top and bottom rows when the sizes are not set in WPSP, taking the height from the 2 deeper images in that row.
What I’m trying to understand is why, when the image sizes are set in WPSP, everything behaves as intended (sizes are applied for both sections) in Firefox, but not in Chrome/Safari, and whether there’s anything that can be done to get them to match the Firefox behaviour, regardless if original image proportions.