Thanks for a great library. Apologies if this has been asked and answered.

I'm having trouble when using image groups with index links. The first image in the group appears to drop from the group after you initiate and close the floatbox.

You can see the behavior demonstrated on the Floatbox demo page . Initially there are 5 images grouped when you click the "Include Index Links" link. When you click the same link again the count of total images drops to 4. The first image appears to be dropped from the group list...at least for me

I tried changing the rev attribute value numIndexLinks to the actual number of images in the group. No joy, the first image was still dropped. I thank you for any guidance on working around this behavior.

This is a known bug in floatbox 4.0+ that is fixed in the next release (4.05) which should be out in just a few days.

There is a workaround. On the anchor that has the showThis:false option set, add a callback to re-inventory the page when the floatbox closes - like this:
afterBoxEnd:`fb.anchors.length = 0; fb.activateElements();`

This can be tested on the demo page by running "javascript:(fb.anchors.length = 0) || fb.activateElements()" from the browser address bar.

Many thanks for the fast reply. Your work around did the trick.