diff --git a/Packages/XStatsKit/Sources/XStatsUI/AppKit/AppController.swift b/Packages/XStatsKit/Sources/XStatsUI/AppKit/AppController.swift
index b495251..cea98ed 100644
--- a/Packages/XStatsKit/Sources/XStatsUI/AppKit/AppController.swift
+++ b/Packages/XStatsKit/Sources/XStatsUI/AppKit/AppController.swift
@@ -209,6 +209,7 @@ public final class AppController: NSObject, NSApplicationDelegate {
     }
 
     public func applicationWillTerminate(_ notification: Notification) {
+        Log.app.notice("XStats 自身即将退出，PID \(ProcessInfo.processInfo.processIdentifier)")
         rest.prepareForTermination()
         widgetTimer?.invalidate()
         calendarMenuBar.stop()
diff --git a/Packages/XStatsKit/Sources/XStatsUI/State/UninstallerController.swift b/Packages/XStatsKit/Sources/XStatsUI/State/UninstallerController.swift
index 1795549..aee6a45 100644
--- a/Packages/XStatsKit/Sources/XStatsUI/State/UninstallerController.swift
+++ b/Packages/XStatsKit/Sources/XStatsUI/State/UninstallerController.swift
@@ -21,14 +21,13 @@ public final class UninstallerController {
     var chosen: Set<String> = []
     /// 有应用启动或退出时变化，让“正在运行”的提示跟着刷新
     private var runningRevision = 0
-    @ObservationIgnored private var observers: [NSObjectProtocol] = []
+    @ObservationIgnored private var runningApplicationsObservation: NSKeyValueObservation?
 
     public init() {
-        let center = NSWorkspace.shared.notificationCenter
-        for name in [NSWorkspace.didLaunchApplicationNotification, NSWorkspace.didTerminateApplicationNotification] {
-            observers.append(center.addObserver(forName: name, object: nil, queue: .main) { [weak self] _ in
-                MainActor.assumeIsolated { self?.runningRevision += 1 }
-            })
+        // LSUIElement 应用（如 MacTools）不会发送普通应用的启动／退出通知。
+        // 观察运行列表才能覆盖这些应用；异步回到主线程，等 AppKit 更新列表后再通知视图。
+        runningApplicationsObservation = NSWorkspace.shared.observe(\.runningApplications) { [weak self] _, _ in
+            Task { @MainActor [weak self] in self?.runningRevision += 1 }
         }
     }
 
@@ -95,7 +94,10 @@ public final class UninstallerController {
     }
 
     func quit(_ app: InstalledApp) {
-        NSRunningApplication.runningApplications(withBundleIdentifier: app.bundleIdentifier).forEach { $0.terminate() }
+        for running in NSRunningApplication.runningApplications(withBundleIdentifier: app.bundleIdentifier) {
+            let accepted = running.terminate()
+            Log.app.notice("卸载前请求退出应用 \(app.name, privacy: .public)，包名 \(app.bundleIdentifier, privacy: .public)，PID \(running.processIdentifier)，请求已发送：\(accepted)")
+        }
     }
 
     func requestUninstall() {
diff --git a/Packages/XStatsKit/Tests/XStatsUITests/UninstallerRunningApplicationTests.swift b/Packages/XStatsKit/Tests/XStatsUITests/UninstallerRunningApplicationTests.swift
new file mode 100644
index 0000000..a67593f
--- /dev/null
+++ b/Packages/XStatsKit/Tests/XStatsUITests/UninstallerRunningApplicationTests.swift
@@ -0,0 +1,97 @@
+// Copyright (C) 2026 ysicing
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import AppKit
+import Cleaner
+import Observation
+import Testing
+@testable import XStatsUI
+
+@MainActor
+struct UninstallerRunningApplicationTests {
+    @Test(.serialized, arguments: [true, false])
+    func quittingTargetRefreshesRunningStateAndKeepsWindow(accessory: Bool) async throws {
+        let root = FileManager.default.temporaryDirectory.appendingPathComponent("UninstallerQuit-\(UUID())")
+        defer { try? FileManager.default.removeItem(at: root) }
+        let identifier = "test.xstats.uninstaller.\(UUID().uuidString)"
+        let url = try await Task.detached {
+            try Self.makeTestApplication(in: root, identifier: identifier, accessory: accessory)
+        }.value
+        let controller = UninstallerController()
+        let configuration = NSWorkspace.OpenConfiguration()
+        configuration.activates = false
+        configuration.createsNewApplicationInstance = true
+        let running = try await NSWorkspace.shared.openApplication(at: url, configuration: configuration)
+        defer { if !running.isTerminated { running.forceTerminate() } }
+        let target = InstalledApp(url: url, name: "UninstallerQuitTest", bundleIdentifier: identifier,
+                                  version: nil, teamIdentifier: nil)
+        controller.select(target)
+        // openApplication 返回与运行列表更新不是同一个时刻。
+        let launchDeadline = ContinuousClock.now + .seconds(5)
+        while ContinuousClock.now < launchDeadline, !controller.isRunning(target) {
+            try await Task.sleep(for: .milliseconds(20))
+        }
+        try #require(controller.isRunning(target))
+
+        // 保留一个测试窗口，确保退出的只是临时目标应用；不触碰用户的应用或文件。
+        let window = NSWindow(contentRect: NSRect(x: -10_000, y: -10_000, width: 100, height: 100),
+                              styleMask: .borderless, backing: .buffered, defer: false)
+        window.isReleasedWhenClosed = false
+        window.orderFrontRegardless()
+        defer { window.close() }
+        // 等启动时排队的状态刷新完成，再模拟 SwiftUI 对运行状态的依赖。
+        try await Task.sleep(for: .milliseconds(100))
+        let change = RunningStateChange()
+        withObservationTracking {
+            _ = controller.isRunning(target)
+        } onChange: {
+            Task { @MainActor in change.received = true }
+        }
+
+        controller.quit(target)
+        let deadline = ContinuousClock.now + .seconds(5)
+        while ContinuousClock.now < deadline, !running.isTerminated || !change.received {
+            try await Task.sleep(for: .milliseconds(20))
+        }
+        #expect(running.isTerminated)
+        #expect(change.received, "目标退出后必须通知卸载页刷新，而不只是下次读取时返回新值")
+        #expect(!controller.isRunning(target))
+        #expect(controller.selected == target)
+        #expect(window.isVisible)
+    }
+
+    /// 使用真正的 AppKit 应用覆盖 LSUIElement 的通知差异；编译在后台执行，不使用输出管道。
+    nonisolated private static func makeTestApplication(in root: URL, identifier: String, accessory: Bool) throws -> URL {
+        let app = root.appendingPathComponent("Target.app")
+        let contents = app.appendingPathComponent("Contents")
+        let executable = contents.appendingPathComponent("MacOS/Target")
+        try FileManager.default.createDirectory(at: executable.deletingLastPathComponent(), withIntermediateDirectories: true)
+        let info: [String: Any] = ["CFBundleIdentifier": identifier, "CFBundleExecutable": "Target",
+                                   "CFBundlePackageType": "APPL", "LSUIElement": accessory]
+        try PropertyListSerialization.data(fromPropertyList: info, format: .xml, options: 0)
+            .write(to: contents.appendingPathComponent("Info.plist"))
+        let source = root.appendingPathComponent("main.m")
+        try """
+        #import <AppKit/AppKit.h>
+        int main(void) {
+            @autoreleasepool { [[NSApplication sharedApplication] run]; }
+            return 0;
+        }
+        """.write(to: source, atomically: true, encoding: .utf8)
+        let compiler = Process()
+        compiler.executableURL = URL(fileURLWithPath: "/usr/bin/clang")
+        compiler.arguments = [source.path, "-framework", "AppKit", "-o", executable.path]
+        compiler.standardInput = FileHandle.nullDevice
+        compiler.standardOutput = FileHandle.nullDevice
+        compiler.standardError = FileHandle.standardError
+        try compiler.run()
+        compiler.waitUntilExit()
+        try #require(compiler.terminationStatus == 0)
+        return app
+    }
+}
+
+@MainActor
+private final class RunningStateChange {
+    var received = false
+}