Fix intermittent display of last opened result in 'Empty Last Query' mode (#4375)

Author: jjw24

Flow.Launcher/ViewModel/MainViewModel.cs

@@ -515,8 +515,11 @@ private async Task OpenResultAsync(string index)
                 return;
             }
 
+            var hideWindow = false;
+            var isDialogJumpLeftClick = _isDialogJump && Settings.DialogJumpResultBehaviour == DialogJumpResultBehaviours.LeftClick;
+
             // For Dialog Jump and left click mode, we need to navigate to the path
-            if (_isDialogJump && Settings.DialogJumpResultBehaviour == DialogJumpResultBehaviours.LeftClick)
+            if (isDialogJumpLeftClick)
             {
                 if (result is DialogJumpResult dialogJumpResult)
                 {
@@ -531,26 +534,30 @@ private async Task OpenResultAsync(string index)
             // For query mode, we execute the result
             else
             {
-                var hideWindow = await result.ExecuteAsync(new ActionContext
+                hideWindow = await result.ExecuteAsync(new ActionContext
                 {
                     // not null means pressing modifier key + number, should ignore the modifier key
                     SpecialKeyState = index is not null ? SpecialKeyState.Default : GlobalHotkey.CheckModifiers()
                 }).ConfigureAwait(false);
-
-                if (hideWindow)
-                {
-                    Hide();
-                }
             }
 
-            // Record user selected result for result ranking
-            _userSelectedRecord.Add(result);
-            // Add item to history only if it is from results but not context menu or history
+            // New history result must be recorded before Hide() is called, otherwise when in 'Empty Last Query' query style mode
+            // the QueryAsync call will reconstruct the result list without the new item.
+            // Also, add item to history only if it is from results but not context menu or history.
             if (queryResultsSelected)
             {
                 _history.Add(result);
                 lastHistoryIndex = 1;
             }
+
+            // Only hide for query results (not Dialog Jump left-click mode)
+            if (!isDialogJumpLeftClick && hideWindow)
+            {
+                Hide();
+            }
+
+            // Record user selected result for result ranking
+            _userSelectedRecord.Add(result);
         }
 
         private static IReadOnlyList<Result> DeepCloneResults(IReadOnlyList<Result> results, bool isDialogJump, CancellationToken token = default)