diff --git a/Sources/ProHUD/Alert/AlertManager.swift b/Sources/ProHUD/Alert/AlertManager.swift
index 132a044..af367d4 100644
--- a/Sources/ProHUD/Alert/AlertManager.swift
+++ b/Sources/ProHUD/Alert/AlertManager.swift
@@ -70,11 +70,10 @@ public extension Alert {
     /// - Parameters:
     ///   - identifier: 实例唯一标识符（如果为空，则以代码位置为唯一标识符）
     ///   - handler: 实例创建代码
-    static func lazyPush(identifier: String? = nil, file: String = #file, line: Int = #line, handler: @escaping (_ alert: Alert) -> Void) {
+    static func lazyPush(identifier: String? = nil, file: String = #file, line: Int = #line, handler: @escaping (_ alert: Alert) -> Void, onExists: ((_ alert: Alert) -> Void)? = nil) {
         let id = identifier ?? (file + "#\(line)")
         if let vc = AlertWindow.alerts.last(where: { $0.identifier == id }) {
-            handler(vc)
-            vc.reloadData()
+            onExists?(vc)
         } else {
             Alert { alert in
                 alert.identifier = id
diff --git a/Sources/ProHUD/Core/Views/ProgressView.swift b/Sources/ProHUD/Core/Views/ProgressView.swift
index 3a6572e..e2d555d 100644
--- a/Sources/ProHUD/Core/Views/ProgressView.swift
+++ b/Sources/ProHUD/Core/Views/ProgressView.swift
@@ -58,14 +58,11 @@ public class ProgressView: UIView {
     }
     
     func updateProgress(progress: CGFloat) {
-        if progress <= 1 {
-            // 初始化
-            if progressLayer.superlayer == nil {
-                progressLayer.strokeEnd = 0
-                layer.addSublayer(progressLayer)
-            }
-            progressLayer.strokeEnd = progress
+        if progressLayer.superlayer == nil {
+            progressLayer.strokeEnd = 0
+            layer.addSublayer(progressLayer)
         }
+        progressLayer.strokeEnd = max(min(progress, 1), 0)
     }
     
 }
diff --git a/Sources/ProHUD/Sheet/SheetConvenienceLayout.swift b/Sources/ProHUD/Sheet/SheetConvenienceLayout.swift
index 64c59d4..19805bb 100644
--- a/Sources/ProHUD/Sheet/SheetConvenienceLayout.swift
+++ b/Sources/ProHUD/Sheet/SheetConvenienceLayout.swift
@@ -145,10 +145,12 @@ public extension Sheet {
         contentStack.addArrangedSubview(lb)
         if #available(iOS 11.0, *) {
             let count = contentStack.arrangedSubviews.count
-            if count > 1 {
-                contentStack.setCustomSpacing(config.margin * 3, after: contentStack.arrangedSubviews[count-2])
+            if count > 0 {
                 contentStack.setCustomSpacing(config.margin * 1.5, after: contentStack.arrangedSubviews[count-1])
             }
+            if count > 1 {
+                contentStack.setCustomSpacing(config.margin * 2, after: contentStack.arrangedSubviews[count-2])
+            }
         } else {
             // Fallback on earlier versions
         }
diff --git a/Sources/ProHUD/Sheet/SheetDefaultLayout.swift b/Sources/ProHUD/Sheet/SheetDefaultLayout.swift
index 04317e7..89e01d2 100644
--- a/Sources/ProHUD/Sheet/SheetDefaultLayout.swift
+++ b/Sources/ProHUD/Sheet/SheetDefaultLayout.swift
@@ -81,16 +81,7 @@ extension Sheet: DefaultLayout {
                 } else {
                     make.top.equalToSuperview().offset(config.padding * 2)
                 }
-                if width < maxWidth {
-                    let bottom = screenSafeAreaInsets.bottom
-                    if bottom == 0 {
-                        make.bottom.equalToSuperview().inset(config.padding * 2)
-                    } else {
-                        make.bottom.equalToSuperview().inset(bottom - config.padding / 2)
-                    }
-                } else {
-                    make.bottom.equalToSuperview().inset(config.padding * 2)
-                }
+                make.bottom.equalToSuperview().inset(config.padding * 2)
                 if isPortrait {
                     make.left.right.equalToSuperview().inset(config.padding)
                 } else {
diff --git a/Sources/ProHUD/Sheet/SheetManager.swift b/Sources/ProHUD/Sheet/SheetManager.swift
index 6cdd50c..2c6fd71 100644
--- a/Sources/ProHUD/Sheet/SheetManager.swift
+++ b/Sources/ProHUD/Sheet/SheetManager.swift
@@ -25,11 +25,10 @@ public extension Sheet {
     /// - Parameters:
     ///   - identifier: 实例唯一标识符（如果为空，则以代码位置为唯一标识符）
     ///   - handler: 实例创建代码
-    static func lazyPush(identifier: String? = nil, file: String = #file, line: Int = #line, handler: @escaping (_ sheet: Sheet) -> Void) {
+    static func lazyPush(identifier: String? = nil, file: String = #file, line: Int = #line, handler: @escaping (_ sheet: Sheet) -> Void, onExists: ((_ sheet: Sheet) -> Void)? = nil) {
         let id = identifier ?? (file + "#\(line)")
         if let vc = find(identifier: id).last {
-            handler(vc)
-            vc.reloadData()
+            onExists?(vc)
         } else {
             Sheet { sheet in
                 sheet.identifier = id
diff --git a/Sources/ProHUD/Sheet/SheetWindow.swift b/Sources/ProHUD/Sheet/SheetWindow.swift
index 942e741..061400f 100644
--- a/Sources/ProHUD/Sheet/SheetWindow.swift
+++ b/Sources/ProHUD/Sheet/SheetWindow.swift
@@ -15,9 +15,14 @@ class SheetWindow: Window {
     
     init(sheet: Sheet) {
         self.sheet = sheet
-        super.init(frame: .zero)
         if #available(iOS 13.0, *) {
-            windowScene = sheet.config.windowScene ?? UIApplication.shared.windows.last?.windowScene
+            if let scene = sheet.config.windowScene ?? UIApplication.shared.windows.last?.windowScene {
+                super.init(windowScene: scene)
+            } else {
+                super.init(frame: UIScreen.main.bounds)
+            }
+        } else {
+            super.init(frame: UIScreen.main.bounds)
         }
         sheet.window = self
         windowLevel = .init(rawValue: UIWindow.Level.alert.rawValue - 2)
@@ -38,7 +43,7 @@ class SheetWindow: Window {
             window = SheetWindow(sheet: sheet)
             isNew = true
         }
-        window.rootViewController = sheet // 此时toast.view.frame.size会自动更新为window.frame.size
+        window.rootViewController = sheet
         if windows.contains(window) == false {
             windows.append(window)
         }
diff --git a/Sources/ProHUD/Toast/ToastManager.swift b/Sources/ProHUD/Toast/ToastManager.swift
index 1cb3cfe..2e4a804 100644
--- a/Sources/ProHUD/Toast/ToastManager.swift
+++ b/Sources/ProHUD/Toast/ToastManager.swift
@@ -25,11 +25,10 @@ public extension Toast {
     /// - Parameters:
     ///   - identifier: 实例唯一标识符（如果为空，则以代码位置为唯一标识符）
     ///   - handler: 实例创建代码
-    static func lazyPush(identifier: String? = nil, file: String = #file, line: Int = #line, handler: @escaping (_ toast: Toast) -> Void) {
+    static func lazyPush(identifier: String? = nil, file: String = #file, line: Int = #line, handler: @escaping (_ toast: Toast) -> Void, onExists: ((_ toast: Toast) -> Void)? = nil) {
         let id = identifier ?? (file + "#\(line)")
         if let vc = find(identifier: id).last {
-            handler(vc)
-            vc.reloadData()
+            onExists?(vc)
         } else {
             Toast { toast in
                 toast.identifier = id