Thanks for you reply.
I added some new pictures, looks like it works a bit better, though not fully: https://planszowkiwedwoje.pl/2025/09/support-wproyal-test/ 4 of 6 images are resized, 2 are not. But another gallery that I added works fine in the same post.
I also contacted the author of Lightbox for Gallery & Image Block plugin, as it’s the only plugin I’m using that affects gallery (he calims it’s a theme issue).
Maybe there’s something I’m missing? The settings seem ok (medium size, crop to fit). Anyway, I’ll keep to monitor the issue and if it’s back I’ll let you know.
