I saw only one dragonfly and too briefly to even raise my camera. Blue damselflies were abundant so I tried the lens on them at, or about, its closest working distance of about 4 feet/120cm.
I can't call this a test of the lens, as it was hand-held and there was a gusting breeze throughout. It was a realistic test of its use under typical field conditions.
In each case I show the full image, then the same image dropped to my preference.
Mating damselflies Enallagma cyathigerum (centre of lens), on stinging nettles, f8 1/320 ISO 200. The female appears to be the homeochrome (andromorph) form:

Crop:

Small White butterfly Pieris rapae (edge of lens). f8 1/125 ISO 200:


I believe the lens performed much as I expected.
Harold