diff --git a/Sources/CyanUI/PopupButton/PopupButton.swift b/Sources/CyanUI/PopupButton/PopupButton.swift
index d001947..9ab61f2 100644
--- a/Sources/CyanUI/PopupButton/PopupButton.swift
+++ b/Sources/CyanUI/PopupButton/PopupButton.swift
@@ -159,8 +159,10 @@ class _PopupButtonTriggerView<S>: NSView where S: StringProtocol {
     }
     
     deinit {
-        if let localMonitor = localMonitor, let globalMonitor = globalMonitor {
+        if let localMonitor = localMonitor {
             NSEvent.removeMonitor(localMonitor)
+        }
+        if let globalMonitor = globalMonitor {
             NSEvent.removeMonitor(globalMonitor)
         }
     }
diff --git a/Sources/CyanUI/PopupButton/PopupList.swift b/Sources/CyanUI/PopupButton/PopupList.swift
index bf3b7fd..eee7951 100644
--- a/Sources/CyanUI/PopupButton/PopupList.swift
+++ b/Sources/CyanUI/PopupButton/PopupList.swift
@@ -21,6 +21,8 @@ struct _PopupList<Content>: View where Content: StringProtocol {
     init(contents: [Content], selection: Binding<Content?>, mouseUpEventPublisher: AnyPublisher<NSPoint, Never>) {
         _selection = selection
         self.mouseUpEventPublisher = mouseUpEventPublisher
+        
+        // TODO: Optimize the handling of duplicated items.
         self.contents = contents.enumerated().filter { index, element in
             contents.firstIndex(of: element) == index
         }.map { $0.element }
diff --git a/Sources/CyanUI/VisualEffectView.swift b/Sources/CyanUI/VisualEffectView.swift
index ce3adc6..b8aba2b 100644
--- a/Sources/CyanUI/VisualEffectView.swift
+++ b/Sources/CyanUI/VisualEffectView.swift
@@ -22,14 +22,12 @@ public struct VisualEffectView: NSViewRepresentable {
         self.blendingMode = blendingMode
     }
     
-    public func makeNSView(context: Context) -> NSVisualEffectView {
-        let effectView = NSVisualEffectView()
-        effectView.state = state
-        effectView.blendingMode = blendingMode
-        effectView.material = material
-        return effectView
-    }
+    public func makeNSView(context: Context) -> NSVisualEffectView { .init() }
     
-    public func updateNSView(_ nsView: NSVisualEffectView, context: Context) { }
+    public func updateNSView(_ nsView: NSVisualEffectView, context: Context) {
+        nsView.state = state
+        nsView.blendingMode = blendingMode
+        nsView.material = material
+    }
     
 }
diff --git a/Sources/CyanUtils/WeakWrapper.swift b/Sources/CyanUtils/WeakPropertyWrapper.swift
similarity index 54%
rename from Sources/CyanUtils/WeakWrapper.swift
rename to Sources/CyanUtils/WeakPropertyWrapper.swift
index 8d72899..bee9f32 100644
--- a/Sources/CyanUtils/WeakWrapper.swift
+++ b/Sources/CyanUtils/WeakPropertyWrapper.swift
@@ -7,15 +7,10 @@ import Foundation
 
 @propertyWrapper public class Weak<T> where T: AnyObject {
     
-    private weak var _wrappedValue: T?
-    
-    public var wrappedValue: T? {
-        get { _wrappedValue }
-        set { _wrappedValue = newValue }
-    }
+    public weak var wrappedValue: T?
     
     public init(wrappedValue: T?) {
-        _wrappedValue = wrappedValue
+        self.wrappedValue = wrappedValue
     }
     
 }