From 8c7ea6fc34b10a0db875edeca482d37a35b11fde Mon Sep 17 00:00:00 2001
From: Barry Deeney <mxaddict@codedmaster.com>
Date: Tue, 26 Nov 2019 05:42:23 +0800
Subject: [PATCH] Fixed freezing GUI on reindex (#638)

---
 src/qt/clientmodel.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index b00bd02fe..97b5fdcf9 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -302,7 +302,7 @@ static void BlockTipChanged(ClientModel *clientmodel, bool initialSync, const CB
         clientmodel->cachedBestHeaderTime = blockTime;
     }
     // if we are in-sync or if we notify a header update, update the UI regardless of last update time
-    if (fHeader || !initialSync || now - nLastUpdateNotification > MODEL_UPDATE_DELAY) {
+    if ((fHeader && !fReindex) || !initialSync || now - nLastUpdateNotification > MODEL_UPDATE_DELAY) {
         //pass an async signal to the UI thread
         QMetaObject::invokeMethod(clientmodel, "numBlocksChanged", Qt::QueuedConnection,
                                   Q_ARG(int, height),