From 2a7d2cedc362e0b5ff50696f124f65e7b4b23054 Mon Sep 17 00:00:00 2001
From: sdoroff <sdoroff@gmail.com>
Date: Tue, 8 May 2018 17:26:02 -0400
Subject: [PATCH] Fixes #1554

The issue was caused by the lack of a proper TextChanged event on the TextBox
I implemented a work around
---
 src/Avalonia.Controls/AutoCompleteBox.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Avalonia.Controls/AutoCompleteBox.cs b/src/Avalonia.Controls/AutoCompleteBox.cs
index 8e801d606b..351cbf5520 100644
--- a/src/Avalonia.Controls/AutoCompleteBox.cs
+++ b/src/Avalonia.Controls/AutoCompleteBox.cs
@@ -1954,6 +1954,10 @@ namespace Avalonia.Controls
             // 1. Minimum prefix length
             // 2. If a delay timer is in use, use it
             bool populateReady = newText.Length >= MinimumPrefixLength && MinimumPrefixLength >= 0;
+            if(populateReady && MinimumPrefixLength == 0 && String.IsNullOrEmpty(newText) && String.IsNullOrEmpty(SearchText))
+            {
+                populateReady = false;
+            }
             _userCalledPopulate = populateReady ? userInitiated : false;
 
             // Update the interface and values only as necessary