Night Vision On/Off

[Autz]

Since the new update I can't seem to get my night vision on/off button to work. I don't know if it's just me or if others are having the same problem. I haven't changed any settings that could've altered it, but if it's only my problem I was wondering if there's anyway to "fix" this situation other than gamma fixes which I'd rather not resort to doing.

Thanks so much!