SessionCtl // Force updateVerticalTypingStatus() when needed.

Source/Modules/SessionCtl_HandleDisplay.swift

@@ -46,6 +46,7 @@ extension SessionCtl {
       tooltipInstance.hide()
       return
     }
+    updateVerticalTypingStatus()
     let lineHeightRect = lineHeightRect()
     var finalOrigin: NSPoint = lineHeightRect.origin
     let delta: Double = lineHeightRect.size.height + 4.0  // bottomOutOfScreenAdjustmentHeight

Source/Modules/SessionCtl_HandleStates.swift

@@ -84,6 +84,7 @@ extension SessionCtl {
     }
     // 浮動組字窗的顯示判定
     if newState.hasComposition, PrefMgr.shared.clientsIMKTextInputIncapable.contains(clientBundleIdentifier) {
+      updateVerticalTypingStatus()
       popupCompositionBuffer.isTypingDirectionVertical = isVerticalTyping
       popupCompositionBuffer.show(
         state: newState, at: lineHeightRect(zeroCursor: true).origin