I just mentioned yesterday in some other thread, I tried my first sample of a S-05 blonde ale and I definitely picked up a subtle, almost saison-like flavor note. Ive never noticed that before with S-05. I think it may have been caused by my not controlling the ferm temp closely enough. I initially set the controller for about 65F, but never bothered to put the heater in the fridge, because I figured only cooling would be needed. But the room where the ferm fridge sits got cold enough that the temperature of the fermenting beer dropped to 60F over the first night. At that point, I put the heater in there and brought the temperature back up, and controlled it with both heating and cooling as needed for the rest of the process.
Fortunately, I didnt mind that flavor note at all; it didnt taste bad by any means. Still, I obviously would like to understand why things like that happen, and the temperature thing is the only theory I have because its the only thing that distinguishes this fermentation from several other S-05 batches Ive done.