[SR-9783] Playground live view doesn't render radial CAGradientLayer correctly

[swift-ci]

Previous ID	SR-9783
Radar	None
Original Reporter	kerrmarin (JIRA User)
Type	Bug

Attachment: Download

Environment

2018 13" macbook pro, OSX Mojave 10.14.3 (18D42)

Xcode Version 10.1 (10B61)

Additional Detail from JIRA

Votes	0
Component/s	Xcode Playground Support
Labels	Bug
Assignee	None
Priority	Medium

md5: bc7fb19603f6a839c3e7f241cf714cb9

Issue Description:

With a simple playground showing a radial gradient, playgrounds doesn't display the correct gradient (see attached screenshot)

import UIKit
import PlaygroundSupport
let colors: [UIColor] = [.blue, .orange]
let view = UIView(frame: CGRect(origin: .zero, size: CGSize(width: 300, height: 300)))
view.backgroundColor = .white
let gradientLayer = CAGradientLayer()
gradientLayer.frame = view.bounds
gradientLayer.colors = colors.map { $0.cgColor }
gradientLayer.type = .radial
view.layer.addSublayer(gradientLayer)
// Present the view controller in the Live View window
PlaygroundPage.current.liveView = view

Expected:

The live view will show the correct gradient

Actual:
A weird visual artifact (correct colours but not the gradient)

[belkadan]

cc cwakamo (JIRA User)

[swift-ci]

Comment by Kerr Marin Miller (JIRA)

I can still reproduce this with Xcode 13.3