diff --git a/Source/Modules/SessionCtl_HandleDisplay.swift b/Source/Modules/SessionCtl_HandleDisplay.swift
index f1766a1f..26ac2106 100644
--- a/Source/Modules/SessionCtl_HandleDisplay.swift
+++ b/Source/Modules/SessionCtl_HandleDisplay.swift
@@ -74,7 +74,6 @@ extension SessionCtl {
     state.isVerticalCandidateWindow = (isVerticalTyping || !PrefMgr.shared.useHorizontalCandidateList)
 
     /// 無論是田所選字窗還是 IMK 選字窗，在這裡都有必要重新初期化。
-    ctlCandidateCurrent.delegate = nil
     let candidateLayout: NSUserInterfaceLayoutOrientation =
       ((isVerticalTyping || !PrefMgr.shared.useHorizontalCandidateList)
         ? .vertical
diff --git a/Source/Modules/SessionCtl_HandleStates.swift b/Source/Modules/SessionCtl_HandleStates.swift
index 5d59a82b..289cfc3a 100644
--- a/Source/Modules/SessionCtl_HandleStates.swift
+++ b/Source/Modules/SessionCtl_HandleStates.swift
@@ -26,7 +26,6 @@ extension SessionCtl {
     state = newState
     switch state.type {
       case .ofDeactivated:
-        ctlCandidateCurrent.delegate = nil
         ctlCandidateCurrent.visible = false
         popupCompositionBuffer.hide()
         tooltipInstance.hide()