mangtimo

Thanks for the quick reply.

Not sure if it was not enough sleep or coffee – why I kept using the attachment link to find sizes when the ID was readily available. That surely did it.

Thanks for pointing me to the right direction.
wp_get_attachment_metadata() was also a great find for me.

Unfortunately, no… I had to resort to a different solution and dropped AJAX altogether. Hope you have better luck on finding a workaround.

does a jquery solution work for you?
You can trigger a class of the thumnbnail.
$(targetclassofthumbnail).trigger('click');

reference

The issue is indeed persistent with Firefox.

I actually have Jetpack installed for a client and there was no issue like this with Carousel. However, every time an image is clicked, the darn thing would bring the whole page back to top and I couldn’t figure out why. It was extremely annoying for very long pages. So I disabled the bundled one and installed this and somehow, it fixed the problem! But yeah, this issue is there but I rather have this than the other. So thanks!

(I know it beats the purpose of this plugin so you can stone me to death for actually using this with Jetpack. :P)