diff --git a/Source/Modules/IMEModules/mgrPrefs.swift b/Source/Modules/IMEModules/mgrPrefs.swift
index 37451445..5391a5b9 100644
--- a/Source/Modules/IMEModules/mgrPrefs.swift
+++ b/Source/Modules/IMEModules/mgrPrefs.swift
@@ -415,12 +415,7 @@ public enum mgrPrefs {
   // MARK: - Settings (Tier 2)
 
   @UserDefault(key: UserDef.kUseIMKCandidateWindow.rawValue, defaultValue: false)
-  static var useIMKCandidateWindow: Bool {
-    didSet {
-      NSLog("vChewing App self-terminated due to enabling / disabling IMK candidate window.")
-      NSApplication.shared.terminate(nil)
-    }
-  }
+  static var useIMKCandidateWindow: Bool
 
   @UserDefault(key: UserDef.kHandleDefaultCandidateFontsByLangIdentifier.rawValue, defaultValue: false)
   static var handleDefaultCandidateFontsByLangIdentifier: Bool
diff --git a/Source/Modules/UIModules/PrefUI/suiPrefPaneDevZone.swift b/Source/Modules/UIModules/PrefUI/suiPrefPaneDevZone.swift
index 50809c62..266c2e4d 100644
--- a/Source/Modules/UIModules/PrefUI/suiPrefPaneDevZone.swift
+++ b/Source/Modules/UIModules/PrefUI/suiPrefPaneDevZone.swift
@@ -47,6 +47,8 @@ struct suiPrefPaneDevZone: View {
             LocalizedStringKey("Use IMK Candidate Window instead (will reboot the IME)"),
             isOn: $selUseIMKCandidateWindow.onChange {
               mgrPrefs.useIMKCandidateWindow = selUseIMKCandidateWindow
+              NSLog("vChewing App self-terminated due to enabling / disabling IMK candidate window.")
+              NSApplication.shared.terminate(nil)
             }
           )
           Text(LocalizedStringKey("IMK candidate window is plagued with issues and incapabilities."))
diff --git a/Source/WindowControllers/ctlPrefWindow.swift b/Source/WindowControllers/ctlPrefWindow.swift
index 26decb55..161ed061 100644
--- a/Source/WindowControllers/ctlPrefWindow.swift
+++ b/Source/WindowControllers/ctlPrefWindow.swift
@@ -240,6 +240,7 @@ class ctlPrefWindow: NSWindowController {
   }
 
   @IBAction func updateIMKCandidateEnableStatusAction(_: Any) {
+    NSLog("vChewing App self-terminated due to enabling / disabling IMK candidate window.")
     NSApplication.shared.terminate(nil)
   }
 
diff --git a/Source/WindowNIBs/Base.lproj/frmPrefWindow.xib b/Source/WindowNIBs/Base.lproj/frmPrefWindow.xib
index 5d59da3c..26169615 100644
--- a/Source/WindowNIBs/Base.lproj/frmPrefWindow.xib
+++ b/Source/WindowNIBs/Base.lproj/frmPrefWindow.xib
@@ -1111,7 +1111,6 @@ Features listed here may not work as expected.</string>
                         <font key="font" metaFont="cellTitle"/>
                     </buttonCell>
                     <connections>
-                        <action selector="updateIMKCandidateEnableStatusAction:" target="-2" id="dAG-Si-cta"/>
                         <binding destination="32" name="value" keyPath="values.AdjustIMKCandidateWindowLevel" id="E6Z-Rn-IHD"/>
                         <binding destination="32" name="enabled" keyPath="values.UseIMKCandidateWindow" id="qla-KO-plC"/>
                     </connections>
diff --git a/Source/WindowNIBs/zh-Hant.lproj/frmAboutWindow.strings b/Source/WindowNIBs/zh-Hant.lproj/frmAboutWindow.strings
index ea056ee2..f378b8f4 100644
--- a/Source/WindowNIBs/zh-Hant.lproj/frmAboutWindow.strings
+++ b/Source/WindowNIBs/zh-Hant.lproj/frmAboutWindow.strings
@@ -24,7 +24,7 @@
 // "lblCopyright.title" = "© 2021-2022 vChewing Project.";
 
 /* Class = "NSTextFieldCell"; title = "vChewing macOS Development: Shiki Suen, Isaac Xen, Hiraku Wang, etc.\nvChewing Phrase Database Maintained by Shiki Suen."; ObjectID = "lblCredits"; */
-"lblCredits.title" = "威注音 macOS 程式研发：Shiki Suen, Isaac Xen, Hiraku Wang, 等。\n威注音词库维护：Shiki Suen。";
+"lblCredits.title" = "威注音 macOS 程式研發：Shiki Suen, Isaac Xen, Hiraku Wang, 等。\n威注音詞庫維護：Shiki Suen。";
 
 "xCD-lx-zY7.title" = "網站";
 
diff --git a/Update-Info.plist b/Update-Info.plist
index 3a2f79e4..9e337514 100644
--- a/Update-Info.plist
+++ b/Update-Info.plist
@@ -5,7 +5,7 @@
 	<key>CFBundleShortVersionString</key>
 	<string>2.0.0</string>
 	<key>CFBundleVersion</key>
-	<string>2000</string>
+	<string>2001</string>
 	<key>UpdateInfoEndpoint</key>
 	<string>https://gitee.com/vchewing/vChewing-macOS/raw/main/Update-Info.plist</string>
 	<key>UpdateInfoSite</key>
diff --git a/vChewing.xcodeproj/project.pbxproj b/vChewing.xcodeproj/project.pbxproj
index f477f0b0..96a01632 100644
--- a/vChewing.xcodeproj/project.pbxproj
+++ b/vChewing.xcodeproj/project.pbxproj
@@ -1421,7 +1421,7 @@
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 2000;
+				CURRENT_PROJECT_VERSION = 2001;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_PREPROCESSOR_DEFINITIONS = (
@@ -1460,7 +1460,7 @@
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 2000;
+				CURRENT_PROJECT_VERSION = 2001;
 				ENABLE_NS_ASSERTIONS = NO;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
@@ -1497,7 +1497,7 @@
 				CODE_SIGN_IDENTITY = "-";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 2000;
+				CURRENT_PROJECT_VERSION = 2001;
 				DEAD_CODE_STRIPPING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_DYNAMIC_NO_PIC = NO;
@@ -1547,7 +1547,7 @@
 				CODE_SIGN_IDENTITY = "-";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 2000;
+				CURRENT_PROJECT_VERSION = 2001;
 				DEAD_CODE_STRIPPING = YES;
 				ENABLE_NS_ASSERTIONS = NO;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
@@ -1678,7 +1678,7 @@
 				CODE_SIGN_IDENTITY = "-";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 2000;
+				CURRENT_PROJECT_VERSION = 2001;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_ASSET_PATHS = "";
 				DEVELOPMENT_TEAM = "";
@@ -1733,7 +1733,7 @@
 				CODE_SIGN_IDENTITY = "-";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 2000;
+				CURRENT_PROJECT_VERSION = 2001;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_ASSET_PATHS = "";
 				DEVELOPMENT_TEAM = "";
@@ -1777,7 +1777,7 @@
 				CODE_SIGN_IDENTITY = "-";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 2000;
+				CURRENT_PROJECT_VERSION = 2001;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = "";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
@@ -1819,7 +1819,7 @@
 				CODE_SIGN_IDENTITY = "-";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 2000;
+				CURRENT_PROJECT_VERSION = 2001;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = "";
 				GCC_C_LANGUAGE_STANDARD = gnu99;