I was thinking about this and went ‘aha’ when I realized you were talking about reordering the repeater when the images were reordered by dragging them. That’s really uncharted territory. My little trick only works because I’m triggering the click event on ACF links that are there to delete and add rows to a repeater. Detecting that the order of the images in the gallery have changed and reordering the repeater based on that will be a lot more complicated than my examples.
Does it matter if the order is the same or just that there is one row for each image in the gallery so that you can match up the image ID’s and get the number of columns? Maybe dynamically set the order of the repeater with an acf/load_value filter the next time the page loads?
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