"Copy Multiple" results are out of order

I'm using LiveCycle Designer (numerous versions) and have come across what I believe to be a bug.

If I create a text or numeric field, and use "Copy Multiple," the fields are positioned in an orderly way, and in the hierarchy it shows FieldName[0], FieldName[1], FieldName[2] and so on, as expected.

However, on the form itself, the fields are out of order. For example, if I used "Copy Multiple" to make 5 additional fields, FieldName[5] appears directly under FieldName[0], For the screen shot, I've changed the captions to show the field name, as generated with Copy Multiple.

I thought I had used this feature successfully a number of years ago, but it certainly doesn't work now (with ES2 or ES3). Suggestions?