diff --git a/Source/Modules/InputHandler_HandleCandidate.swift b/Source/Modules/InputHandler_HandleCandidate.swift
index b4bd09ba..2f38584a 100644
--- a/Source/Modules/InputHandler_HandleCandidate.swift
+++ b/Source/Modules/InputHandler_HandleCandidate.swift
@@ -102,7 +102,7 @@ extension InputHandler {
     if let keyCodeType = KeyCode(rawValue: input.keyCode) {
       switch keyCodeType {
       case .kLineFeed, .kCarriageReturn:
-        if state.type == .ofAssociates, !prefs.alsoConfirmAssociatedCandidatesByEnter {
+        if state.type == .ofAssociates, !(input.isShiftHold || prefs.alsoConfirmAssociatedCandidatesByEnter) {
           delegate.switchState(IMEState.ofAbortion())
           return true
         }
diff --git a/Source/Modules/PrefMgr_Core.swift b/Source/Modules/PrefMgr_Core.swift
index 4bcc2a4a..1dde454f 100644
--- a/Source/Modules/PrefMgr_Core.swift
+++ b/Source/Modules/PrefMgr_Core.swift
@@ -114,7 +114,7 @@ public class PrefMgr: PrefMgrProtocol {
   @AppProperty(key: UserDef.kAutoCorrectReadingCombination.rawValue, defaultValue: true)
   public var autoCorrectReadingCombination: Bool
 
-  @AppProperty(key: UserDef.kAlsoConfirmAssociatedCandidatesByEnter.rawValue, defaultValue: true)
+  @AppProperty(key: UserDef.kAlsoConfirmAssociatedCandidatesByEnter.rawValue, defaultValue: false)
   public var alsoConfirmAssociatedCandidatesByEnter: Bool
 
   @AppProperty(key: UserDef.kKeepReadingUponCompositionError.rawValue, defaultValue: false)
diff --git a/Source/Modules/SessionCtl_IMKCandidatesData.swift b/Source/Modules/SessionCtl_IMKCandidatesData.swift
index 9a464494..2a3fc48e 100644
--- a/Source/Modules/SessionCtl_IMKCandidatesData.swift
+++ b/Source/Modules/SessionCtl_IMKCandidatesData.swift
@@ -6,6 +6,7 @@
 // marks, or product names of Contributor, except as required to fulfill notice
 // requirements defined in MIT License.
 
+import AppKit
 import Foundation
 import Shared
 import Tekkon
@@ -99,7 +100,8 @@ public extension SessionCtl {
     let candidateString: String = candidateString?.string ?? ""
     if state.type == .ofAssociates {
       // 聯想詞的 Shift+選字鍵的處理已經在其它位置實作完成。
-      if !PrefMgr.shared.alsoConfirmAssociatedCandidatesByEnter {
+      let isShiftHold = NSEvent.modifierFlags.contains(.shift)
+      if !(isShiftHold || PrefMgr.shared.alsoConfirmAssociatedCandidatesByEnter) {
         switchState(IMEState.ofAbortion())
         return
       }
diff --git a/Source/Modules/UIModules/PrefUI/VwrPrefPaneBehavior.swift b/Source/Modules/UIModules/PrefUI/VwrPrefPaneBehavior.swift
index 9b0942fc..93d9fca2 100644
--- a/Source/Modules/UIModules/PrefUI/VwrPrefPaneBehavior.swift
+++ b/Source/Modules/UIModules/PrefUI/VwrPrefPaneBehavior.swift
@@ -40,7 +40,7 @@ struct VwrPrefPaneBehavior: View {
   @Backport.AppStorage(wrappedValue: true, UserDef.kUseSpaceToCommitHighlightedSCPCCandidate.rawValue)
   private var useSpaceToCommitHighlightedSCPCCandidate: Bool
 
-  @Backport.AppStorage(wrappedValue: true, UserDef.kAlsoConfirmAssociatedCandidatesByEnter.rawValue)
+  @Backport.AppStorage(wrappedValue: false, UserDef.kAlsoConfirmAssociatedCandidatesByEnter.rawValue)
   private var alsoConfirmAssociatedCandidatesByEnter: Bool
 
   @Backport.AppStorage(wrappedValue: true, UserDef.kTogglingAlphanumericalModeWithLShift.rawValue)