This happened to a batch of an American light I made last summer. I made it side by side with a red ale. Fermented in the same dark closet, same temps, bottled same day. The red ale was awesome while the light beer had a slinky taste.
I gave them to my buddy who said the first 6 pack was tough to drink, but a week later when he ran out he called me up wanting me to make it again lol