Transitions

Transitions can’t fade between images without strange “zoom” effect (changing transition animation setting has no effect at all, even if I set it to ‘none’). It’s as if the lightbox gets reset to some default smaller dimensions and then scales up back to next image size. Not like other Fancybox implementations.
Unfortunately can’t provide link as page is in development locally. Theme 2015 child, not heavily modded.

https://www.ads-software.com/plugins/fancybox-for-wordpress/