Same issue here. It should reset the "conditions" set and duplicate the fields rather than "cloning" them. Also, the standard "field" param 'add_button' does not work for most/all fields.
Say you have an image uploader and limit it to 1 upload, you'd want the button to say "Select an image", one would think 'add_button' => 'Select an image' should work in the field of the image uploader but it doesn't. But the "topmost" field works, so in my "group" and I have it cloneable, where this issue of this topic comes in, the button text can be changed.
Iffy behaviour thought I should put it in here while you're looking at the other issue we have.
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