diff --git a/core/app.py b/core/app.py
index 0ab0503..ca85a00 100644
--- a/core/app.py
+++ b/core/app.py
@@ -178,16 +178,28 @@ class StickyNoteApp(AcrylicWindow):
 
         self.configure_window()
 
-        self.build_tray()
-
-        self.restore_state()
-
-        self.apply_style()
+        QTimer.singleShot(
+            120,
+            self.initialize_effects,
+        )
 
         QTimer.singleShot(
-            self.profile["window"][
-                "startup_stabilize_ms"
-            ],
+            220,
+            self.build_tray,
+        )
+
+        QTimer.singleShot(
+            80,
+            self.restore_state,
+        )
+
+        QTimer.singleShot(
+            260,
+            self.apply_style,
+        )
+
+        QTimer.singleShot(
+            320,
             self.finalize_startup,
         )
 
@@ -258,6 +270,7 @@ class StickyNoteApp(AcrylicWindow):
             QEasingCurve.Type.OutCubic
         )
 
+    # v1.0.1 configure_window.py
     def configure_window(self) -> None:
         window = self.profile["window"]
 
@@ -271,66 +284,33 @@ class StickyNoteApp(AcrylicWindow):
             window["min_height"],
         )
 
-        self.setWindowFlags(
-            Qt.WindowType.Tool
-            | Qt.WindowType.FramelessWindowHint
-            | Qt.WindowType.WindowStaysOnTopHint
-            | Qt.WindowType.CustomizeWindowHint
+        self.setWindowFlag(
+            Qt.WindowType.WindowStaysOnTopHint,
+            True,
         )
 
         self.setAttribute(
             Qt.WidgetAttribute.WA_TranslucentBackground,
             True,
         )
+
         self.setAttribute(
             Qt.WidgetAttribute.WA_NoSystemBackground,
             True,
         )
-
-        self.setWindowFlag(
-            Qt.WindowType.WindowMinMaxButtonsHint,
-            False,
-        )
-
         self.setWindowFlag(
             Qt.WindowType.WindowCloseButtonHint,
             False,
         )
-
-        self.setWindowFlag(
-            Qt.WindowType.CustomizeWindowHint,
-            True,
+        self.setAutoFillBackground(
+            False
         )
 
-        self.setAutoFillBackground(False)
-
-
-        appearance = (
-            self.profile["appearance"]
+        QTimer.singleShot(
+            120,
+            self.initialize_effects,
         )
 
-        try:
-            if appearance[
-                "enable_mica"
-            ]:
-                self.windowEffect.setMicaEffect(
-                    self.winId(),
-                    True,
-                )
-
-            elif appearance[
-                "enable_acrylic"
-            ]:
-                self.windowEffect.setAcrylicEffect(
-                    self.winId(),
-                    "00000001",
-                )
- 
-        except Exception:
-            logging.exception(
-                "window_effect_failure"
-            )
-
     def build_ui(self) -> None:
         self.root = QWidget(self)
 
@@ -341,7 +321,7 @@ class StickyNoteApp(AcrylicWindow):
         self.layout = QVBoxLayout(
             self.root
         )
-
+       
         window = self.profile["window"]
 
         margin = window[
@@ -465,7 +445,11 @@ class StickyNoteApp(AcrylicWindow):
         )
 
         self.titleBar.hide()
+        self.editor.setFocus()
+        
     def build_tray(self) -> None:
+        if QSystemTrayIcon.isSystemTrayAvailable() is False:
+            return
         if not self.profile[
             "behavior"
         ]["enable_tray"]:
@@ -619,7 +603,40 @@ class StickyNoteApp(AcrylicWindow):
                 ],
             )
         )
+    def initialize_effects(self) -> None:
+        appearance = (
+            self.profile["appearance"]
+        )
 
+        try:
+            hwnd = int(self.winId())
+
+            if not hwnd:
+                return
+
+            if appearance[
+                "enable_mica"
+            ]:
+                self.windowEffect.setMicaEffect(
+                    hwnd,
+                    True,
+                )
+
+            elif appearance[
+                "enable_acrylic"
+            ]:
+                self.windowEffect.setAcrylicEffect(
+                    hwnd,
+                    "00000001",
+                )
+
+            self.update()
+            self.repaint()
+
+        except Exception:
+            logging.exception(
+                "window_effect_failure"
+            )
     def start_drag(
         self,
         global_pos: QPoint,
@@ -699,9 +716,14 @@ class StickyNoteApp(AcrylicWindow):
         )
 
     def show_preview(self) -> None:
-        if self.editor.hasFocus():
+        if (
+            self.editor.hasFocus()
+            or not self.isActiveWindow()
+        ):
             return
-
+        self.preview.setFocusPolicy(
+            Qt.FocusPolicy.NoFocus
+        )
         markdown = (
             self.editor.toPlainText()
         )