See https://github.com/bitcoin/bitcoin/pull/1767

diff --git a/src/qt/rpcconsole.cpp b/src/qt/rpcconsole.cpp
index ff773f6..c793bf9 100644 (file)
--- a/src/qt/rpcconsole.cpp
+++ b/src/qt/rpcconsole.cpp
@@ -299,6 +299,8 @@ static QString categoryClass(int category)
 void RPCConsole::clear()
 {
     ui->messagesWidget->clear();
+    history.clear();
+    historyPtr = 0;
     ui->lineEdit->clear();
     ui->lineEdit->setFocus();