diff --git a/crates/aether-win32/src/render/chrome.rs b/crates/aether-win32/src/render/chrome.rs
index aab4ff2..6b84734 100644
--- a/crates/aether-win32/src/render/chrome.rs
+++ b/crates/aether-win32/src/render/chrome.rs
@@ -372,6 +372,9 @@ impl EditorState {
         let width = region.width;
         let height = region.height;
 
+        // 冰冻恢复后图标缓存为空，需先重建几何再绘制
+        self.icons.ensure_created_from_target(target);
+
         unsafe {
             // 标题栏背景 — 玻璃模式下使用半透明暗色
             let bg_color = if self.theme.glass_enabled {
@@ -1136,6 +1139,9 @@ impl EditorState {
         let width = region.width;
         let height = region.height;
 
+        // 冰冻恢复后图标缓存为空，需先重建几何再绘制
+        self.icons.ensure_created_from_target(target);
+
         unsafe {
             let bg_color = if self.theme.glass_enabled {
                 self.theme.activity_bar_bg
diff --git a/crates/aether-win32/src/window/mouse_handler/mouse_move.rs b/crates/aether-win32/src/window/mouse_handler/mouse_move.rs
index a615100..007f6d6 100644
--- a/crates/aether-win32/src/window/mouse_handler/mouse_move.rs
+++ b/crates/aether-win32/src/window/mouse_handler/mouse_move.rs
@@ -250,8 +250,19 @@ pub(crate) unsafe fn on_mouse_move(
     if any_hover_changed || tooltip_changed {
         // 标记 hover 相关脏区域，避免全窗口重绘
         let mut st = state.borrow_mut();
-        if titlebar_changed || tab_changed {
-            // 标题栏 + 活动栏区域
+        if titlebar_changed {
+            // 标题栏 hover 变化：标记标题栏区域脏，确保窗控按钮 hover 高亮即时刷新
+            let tb = layout.title_bar_region();
+            st.dirty_tracker.mark_region(
+                tb.x,
+                tb.y,
+                tb.width,
+                tb.height,
+                crate::dirty_rect::DirtyRegionType::TitleBar,
+            );
+        }
+        if tab_changed {
+            // 活动栏 + 标签栏区域
             let ar = layout.activity_bar_region();
             st.dirty_tracker.mark_region(
                 ar.x,
diff --git a/crates/aether-win32/src/window/window_messages.rs b/crates/aether-win32/src/window/window_messages.rs
index d5e35ce..2113e57 100644
--- a/crates/aether-win32/src/window/window_messages.rs
+++ b/crates/aether-win32/src/window/window_messages.rs
@@ -747,23 +747,26 @@ pub(crate) unsafe fn on_size(hwnd: HWND, _msg: u32, wparam: WPARAM, _lparam: LPA
         // 按 hwnd 取状态（而非线程局部活跃状态），
         // 避免多窗口/启动最大化时把尺寸更新到错误的窗口状态上
         if let Some(state) = get_and_set_state(hwnd) {
-            let mut st = state.borrow_mut();
-            st.is_maximized = is_max;
-            if is_min {
-                // 最小化：立即进入冰冻态释放内存（AI/Agent 经无头泵保活）
-                st.power.minimized = true;
-                st.enter_frozen();
-            } else {
-                st.power.minimized = false;
-                st.resize(width, height);
-                // 从最小化恢复：解冻（全量重绘 + 懒重建 D2D 资源）
-                if st.power.frozen {
-                    st.exit_frozen();
+            let was_frozen;
+            {
+                let mut st = state.borrow_mut();
+                st.is_maximized = is_max;
+                was_frozen = st.power.frozen && !is_min;
+                if is_min {
+                    // 最小化：立即进入冰冻态释放内存（AI/Agent 经无头泵保活）
+                    st.power.minimized = true;
+                    st.enter_frozen();
+                } else {
+                    st.power.minimized = false;
+                    st.resize(width, height);
+                    // 从最小化恢复：解冻（全量重绘 + 懒重建 D2D 资源）
+                    if st.power.frozen {
+                        st.exit_frozen();
+                    }
                 }
             }
             // 若最大化且用户设置了显示任务栏，调整窗口为工作区大小
-            let need_adjust = is_max && st.app_settings.ui.show_taskbar_when_maximized;
-            drop(st);
+            let need_adjust = is_max && state.borrow().app_settings.ui.show_taskbar_when_maximized;
             if need_adjust {
                 use windows::Win32::Graphics::Gdi::{
                     GetMonitorInfoW, MonitorFromWindow, MONITORINFO, MONITOR_DEFAULTTONEAREST,
@@ -790,6 +793,11 @@ pub(crate) unsafe fn on_size(hwnd: HWND, _msg: u32, wparam: WPARAM, _lparam: LPA
             }
             if !is_min {
                 invalidate_window(hwnd);
+                // 从最小化恢复时：同步触发 WM_PAINT 完成首帧渲染，
+                // 避免 D2D 渲染目标重建期间标题栏按钮等区域短暂空白
+                if was_frozen {
+                    let _ = windows::Win32::Graphics::Gdi::UpdateWindow(hwnd);
+                }
             }
         }
     }