MacOS - AppKit + SwiftUI - Liquid Glass Without Any Blur

Question

I've been trying to set up liquid glass effect like on screenshot below and can't figure out how to do it. Tried official documentation methods even with .glassEffect(.clear) but got nothing.

-> swift --version
swift-driver version: 1.127.14.1 Apple Swift version 6.2 (swiftlang-6.2.0.19.9 clang-1700年3月19日.1)
Target: arm64-apple-macosx26.0

-> sw_vers
ProductName: macOS
ProductVersion: 26.0.1
BuildVersion: 25A362

what I want

I'm using AppKit to set up my window and NSHostingView to host SwiftUI.

what I've got

Here's the code.

window setup:

 @MainActor
 private func setupWindow() {
 let barHeight: CGFloat = 35
 let barHorizontalCut: CGFloat = 10
 let barVerticalCut: CGFloat = 2
 guard let mainScreen = NSScreen.main else { return }
 let screenFrame = mainScreen.frame
 let frame = NSRect(
 x: barHorizontalCut,
 y: screenFrame.height - barHeight - barVerticalCut,
 width: screenFrame.width - barHorizontalCut * 2,
 height: barHeight - barVerticalCut
 )
 window = BarWindow(
 contentRect: frame,
 styleMask: [.borderless],
 backing: .buffered,
 defer: false
 )
 window.isOpaque = false
 window.backgroundColor = .clear
 window.level = NSWindow.Level(rawValue: NSWindow.Level.statusBar.rawValue - 1)
 window.ignoresMouseEvents = false
 window.collectionBehavior = [.canJoinAllSpaces, .stationary, .ignoresCycle]
 window.hasShadow = false
 window.orderBack(nil)
 let container = NSView(frame: frame)
 container.wantsLayer = true
 container.layer?.backgroundColor = .clear
 // ensure container's layer is not opaque so alpha can show through
 container.layer?.isOpaque = false
 container.layer?.cornerRadius = 16
 container.layer?.masksToBounds = true
 // Host a SwiftUI view inside AppKit
 let hostingView = NSHostingView(rootView: BarContentView()
 .frame(maxWidth: .infinity, maxHeight: .infinity))
 
 hostingView.translatesAutoresizingMaskIntoConstraints = false
 container.addSubview(hostingView)
 // Constrain hosting view to container
 NSLayoutConstraint.activate([
 hostingView.leadingAnchor.constraint(equalTo: container.leadingAnchor),
 hostingView.trailingAnchor.constraint(equalTo: container.trailingAnchor),
 hostingView.topAnchor.constraint(equalTo: container.topAnchor),
 hostingView.bottomAnchor.constraint(equalTo: container.bottomAnchor)
 ])
 window.contentView = container
 window.makeKeyAndOrderFront(nil)
 }

widget setup:

 // deleted unnecessary code
 HStack(spacing: 0) {
 HStack(spacing: 8) {
 timeButton(width: timeButtonWidth, height: widgetHeight, cornerRadius: cornerRadius)
 }
 }
 }
 func timeButton(width: CGFloat, height: CGFloat, cornerRadius: CGFloat) -> some View {
 TimelineView(.periodic(from: .now, by: 1.0)) { timeline in
 Button(action: {
 let url = URL(fileURLWithPath: "/System/Applications/Calendar.app")
 NSWorkspace.shared.open(url)
 }) {
 HStack(spacing: 4) {
 Image(systemName: "calendar")
 .foregroundColor(.white)
 .background(.clear)
 .font(.system(size: 12))
 Text(timeline.date.formatted(date: .abbreviated, time: .standard))
 .foregroundColor(.white)
 .background(.clear)
 .font(.system(size: 12))
 }
 .frame(width: width, height: height)
 .glassEffect(.clear)
 }
 .frame(width: width, height: height)
 .cornerRadius(cornerRadius)
 }
 }