SKNode位置不工作，总是默认为0,0

I have fairly well developed SpriteKit game I'm working on, added some code to add a new SKSpriteNode to the Scene, (same as I have done dozens of other places in the code, but for some reason this time it is just ignoring the position I have set for the node, I have tried it by explicit .position = CGPointMake(x,y) and trying the [node setPosition:CGPointMake(x,y)]I have fairly well developed SpriteKit game I'm