Zeroscope Tuner Ref Bug?

I’ve noticed that when I power on my Zeroscope, Ref (in the tuner) is sometimes at 471. I adjust it back to 440. The weird part is, I’m unable to set Ref to 471 as it stops at 450. I’m assuming it’s a bug.

I’m running OS 1.2.

Anyone? I just powered up Zeroscope and went to tune my oscillators and Ref was back at 471 again. Kinda annoying - especially if I tune everything and realize afterwards that it’s all tuned to the wrong reference.