diff --git a/NEWS.md b/NEWS.md
index 36623e43..23cc8b97 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-Version 0.3.0
+Version 0.5.0
  - enhancement: support C++ using type alias;
  - fix: when press shift, completion popu window will hide
  - enhancement: options in debugger setting widget, to skip system/project/custom header&project files when step into
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index d891d09f..a3e81e20 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -1573,8 +1573,7 @@ void MainWindow::buildContextMenus()
     });
     mDebugConsole_SelectAll=createActionFor(
                 tr("Select All"),
-                ui->debugConsole,
-                QKeySequence("Ctrl+A"));
+                ui->debugConsole);
     connect(mDebugConsole_SelectAll, &QAction::triggered,
             [this]() {
         ui->debugConsole->selectAll();
diff --git a/RedPandaIDE/mainwindow.ui b/RedPandaIDE/mainwindow.ui
index 091c2b7a..43494389 100644
--- a/RedPandaIDE/mainwindow.ui
+++ b/RedPandaIDE/mainwindow.ui
@@ -469,7 +469,7 @@
              <enum>QTabWidget::North</enum>
             </property>
             <property name="currentIndex">
-             <number>4</number>
+             <number>0</number>
             </property>
             <widget class="QWidget" name="tabDebugConsole">
              <attribute name="title">
@@ -817,7 +817,7 @@
      <x>0</x>
      <y>0</y>
      <width>946</width>
-     <height>22</height>
+     <height>25</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
diff --git a/RedPandaIDE/systemconsts.h b/RedPandaIDE/systemconsts.h
index b1709be6..0799efd7 100644
--- a/RedPandaIDE/systemconsts.h
+++ b/RedPandaIDE/systemconsts.h
@@ -3,7 +3,7 @@
 
 #include <QStringList>
 
-#define DEVCPP_VERSION "0.2.2"
+#define DEVCPP_VERSION "0.5.0"
 
 #ifdef Q_OS_WIN
 #define APP_SETTSINGS_FILENAME "redpandacpp.ini"
diff --git a/RedPandaIDE/widgets/qconsole.cpp b/RedPandaIDE/widgets/qconsole.cpp
index 116a6a31..e2f03e97 100644
--- a/RedPandaIDE/widgets/qconsole.cpp
+++ b/RedPandaIDE/widgets/qconsole.cpp
@@ -684,12 +684,12 @@ void QConsole::keyPressEvent(QKeyEvent *event)
     QAbstractScrollArea::keyPressEvent(event);
 }
 
-void QConsole::focusInEvent(QFocusEvent *event)
+void QConsole::focusInEvent(QFocusEvent *)
 {
     showCaret();
 }
 
-void QConsole::focusOutEvent(QFocusEvent *event)
+void QConsole::focusOutEvent(QFocusEvent *)
 {
     hideCaret();
 }
@@ -715,7 +715,9 @@ void QConsole::paintEvent(QPaintEvent *event)
         nL2 = std::min(std::max(mTopRow + (rcClip.bottom() + mRowHeight - 1) / mRowHeight, 1), maxScrollHeight() + mRowsInWindow  - 1);
         QPainter cachePainter(mContentImage.get());
         cachePainter.setFont(font());
-        painter.fillRect(rcClip,mBackground);
+        if (viewport()->rect() == rcClip) {
+            painter.fillRect(rcClip, mBackground);
+        }
         paintRows(cachePainter,nL1,nL2);
         painter.drawImage(rcClip,*mContentImage,rcClip);
     }