SKView's texture(from) throwing a Metal validation error

I'm using `SpriteKit` to animate a complicated scene with 100 or so nodes on screen. I use `SKView`'s `.texture(from: node)` to copy the contents of nodes into SKTextures for various uses, and it mostly works great. But when the animation gets really active, I'll suddenly get a crash.

I can replicate the issue by repeatedly calling `.texture(from)` with a simple sprite node. Code below. Create a new Xcode project using the "Single View App" template, set the class of the `ViewController`'s `View` to `SKView` in the storyboard, and replace the contents of `ViewController.swift` with:

import SpriteKit

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        guard let view = self.view as? SKView else { return }
        let node:SKNode = SKSpriteNode(color: UIColor.white, size: CGSize(width: 750, height: 750))
        for i in 0...50 {
            print(i)
            let _ = view.texture(from: node)
        }
    }
}

In the simulator this runs fine, counts to 50 and quits. But on the device (iPhone 7 Plus, iOS 11.0.1) it counts to 28 and throws:

validateRenderPassDescriptor:611: failed assertion `No rendertargets set in RenderPassDescriptor.'

Googling this error turns up nothing. I assume SpriteKit is using a Metal RenderPassDescriptor under the hood, but I don't know how to debug that.

Changing the size of the node affects the number of iterations before crashing, but even with very small nodes it eventually throws.

I would appreciate any ideas on why this is happening and how to fix it.