diff --git a/NEWS.md b/NEWS.md
index cf95c337..a3fc48ab 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -79,7 +79,9 @@ Red Panda C++ Version 2.27
   - fix: Function name not correctly found if it and the '(' is not in one line;
   - fix: Register names in the cpu info are not in correct order.
   - enhancement: Auto type induction for new / temp class object.
-  - Enhancement: Vertically scroll by pixel.
+  - enhancement: Vertically scroll by pixel.
+  - enhancement: Display (gdb) prompt in debug console after it's cleared.
+  - fix: Output of "disas" is not shown in debug console.
     
 Red Panda C++ Version 2.26
   - enhancement: Code suggestion for embedded std::vectors.
diff --git a/RedPandaIDE/debugger/gdbmidebugger.cpp b/RedPandaIDE/debugger/gdbmidebugger.cpp
index b1b01a54..2be3ce86 100644
--- a/RedPandaIDE/debugger/gdbmidebugger.cpp
+++ b/RedPandaIDE/debugger/gdbmidebugger.cpp
@@ -841,7 +841,7 @@ void GDBMIDebuggerClient::processResultRecord(const QByteArray &line)
             QByteArray result = line.mid(pos+1);
             processResult(result);
         } else if (mCurrentCmd && !(mCurrentCmd->command.startsWith('-'))) {
-            if (mCurrentCmd->command == "disas") {
+            if (mCurrentCmd->command == "disas" && mCurrentCmd->source != DebugCommandSource::Console) {
                 QStringList disOutput = mConsoleOutput;
                 if (disOutput.length()>=3) {
                     disOutput.pop_back();
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index 25f38d0c..0bec8826 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -2653,7 +2653,7 @@ void MainWindow::prepareDebugger()
     // Clear logs
     ui->debugConsole->clear();
     if (pSettings->debugger().enableDebugConsole()) {
-        ui->debugConsole->addLine("(gdb) ");
+        ui->debugConsole->addLine("(gdb)");
     }
     ui->txtEvalOutput->clear();
 
@@ -4765,6 +4765,9 @@ void MainWindow::onDebugConsoleCopy()
 void MainWindow::onDebugConsoleClear()
 {
     ui->debugConsole->clear();
+    if (pSettings->debugger().enableDebugConsole()) {
+        ui->debugConsole->addLine("(gdb)");
+    }
 }
 
 void MainWindow::onFilesViewOpenInExplorer()
diff --git a/libs/qsynedit/qsynedit/qsynedit.cpp b/libs/qsynedit/qsynedit/qsynedit.cpp
index e95513c6..b3d35495 100644
--- a/libs/qsynedit/qsynedit/qsynedit.cpp
+++ b/libs/qsynedit/qsynedit/qsynedit.cpp
@@ -158,6 +158,8 @@ QSynEdit::QSynEdit(QWidget *parent) : QAbstractScrollArea(parent),
             this, &QSynEdit::onScrolled);
     connect(verticalScrollBar(),&QScrollBar::valueChanged,
             this, &QSynEdit::onScrolled);
+    connect(verticalScrollBar(), &QAbstractSlider::sliderReleased,
+            this, qOverload<>(&QSynEdit::ensureLineAlignedWithTop));
     //enable input method
     setAttribute(Qt::WA_InputMethodEnabled);
 
@@ -2877,6 +2879,31 @@ SyntaxState QSynEdit::calcSyntaxStateAtLine(int line, const QString &newLineText
     return syntaxer()->getState();
 }
 
+int QSynEdit::calcLineAlignedTopPos(int currentValue, bool passFirstLine)
+{
+    int offset = currentValue % mTextHeight;
+    if (offset!=0) {
+        if (passFirstLine)
+            currentValue += (mTextHeight - offset);
+        else
+            currentValue -= offset;
+    }
+    return currentValue;
+}
+
+void QSynEdit::ensureLineAlignedWithTop(void)
+{
+    int value = mTopPos;
+    int offset = value % mTextHeight;
+    if (offset!=0) {
+        if (offset < mTextHeight / 3)
+            value -= offset;
+        else
+            value += (mTextHeight - offset);
+    }
+    setTopPos(value);
+}
+
 int QSynEdit::clientWidth() const
 {
     return viewport()->size().width();
@@ -2952,12 +2979,9 @@ void QSynEdit::ensureCaretVisibleEx(bool ForceToMiddle)
             setTopPos( (vCaretRow - (mLinesInWindow - 1) / 2-1) * mTextHeight);
     } else {
         if ((vCaretRow-1) * mTextHeight < mTopPos)
-            setTopPos( (vCaretRow - 1) * mTextHeight);
+            setTopPos((vCaretRow - 1) * mTextHeight);
         else if (vCaretRow * mTextHeight > mTopPos + clientHeight() ) {
-            int value =  vCaretRow * mTextHeight - clientHeight();
-            int offset = value % mTextHeight;
-            if (offset!=0)
-                value += (mTextHeight - offset);
+            int value = calcLineAlignedTopPos(vCaretRow * mTextHeight - clientHeight(), true);
             setTopPos(value);
         } else
             setTopPos(mTopPos);
@@ -6029,7 +6053,6 @@ void QSynEdit::mousePressEvent(QMouseEvent *event)
     bool bStartDrag = false;
     mMouseMoved = false;
     mMouseOrigin = event->pos();
-    mMouseScrollOldTop = topPos();
     Qt::MouseButton button = event->button();
     int X=event->pos().x();
     int Y=event->pos().y();
@@ -6108,11 +6131,7 @@ void QSynEdit::mouseReleaseEvent(QMouseEvent *event)
         mStateFlags.setFlag(StateFlag::sfWaitForDragging, false);
     }
     mStateFlags.setFlag(StateFlag::sfDblClicked,false);
-    if (mTopPos != mMouseScrollOldTop) {
-        int offset=mTopPos % mTextHeight;
-        if (offset != 0)
-            setTopPos(mTopPos - offset);
-    }
+    ensureLineAlignedWithTop();
     ensureCaretVisible();
     if (oldCaret!=caretXY()) {
         if (mOptions.testFlag(EditorOption::eoGroupUndo))
@@ -6304,14 +6323,8 @@ void QSynEdit::dropEvent(QDropEvent *event)
              && coord>=mDragSelBeginSave && coord<=mDragSelEndSave)
             ) {
         mDocument->deleteAt(mDocument->count()-1);
-        int topPos = mTopPos;
-        if (topPos!=mMouseScrollOldTop) {
-            int offset = topPos % mTextHeight;
-            if (offset!=0)
-                topPos -= offset;
-            setTopPos(topPos);
-            ensureCaretVisible();
-        }
+        ensureLineAlignedWithTop();
+        ensureCaretVisible();
         //do nothing if drag onto itself
         event->acceptProposedAction();
         mDropped = true;
@@ -6388,11 +6401,7 @@ void QSynEdit::dropEvent(QDropEvent *event)
     endEditing();
     event->acceptProposedAction();
     mDropped = true;
-    if (topPos!=mMouseScrollOldTop) {
-        int offset = topPos % mTextHeight;
-        if (offset!=0)
-            topPos -= offset;
-    }
+    topPos = calcLineAlignedTopPos(topPos, false);
     setTopPos(topPos);
     setLeftPos(leftPos);
     internalSetCaretXY(coord);
diff --git a/libs/qsynedit/qsynedit/qsynedit.h b/libs/qsynedit/qsynedit/qsynedit.h
index 6f818492..e939dcc6 100644
--- a/libs/qsynedit/qsynedit/qsynedit.h
+++ b/libs/qsynedit/qsynedit/qsynedit.h
@@ -501,6 +501,8 @@ protected:
     void decPaintLock();
     SyntaxState calcSyntaxStateAtLine(int line, const QString &newLineText);
 private:
+    int calcLineAlignedTopPos(int currentValue, bool passFirstLine);
+    void ensureLineAlignedWithTop(void);
     BufferCoord ensureBufferCoordValid(const BufferCoord& coord);
     void beginEditingWithoutUndo();
     void endEditingWithoutUndo();
@@ -683,7 +685,6 @@ private:
     QFont mFontDummy;
     bool mMouseMoved;
     QPoint mMouseOrigin;
-    int mMouseScrollOldTop;
 
     bool mInserting;
     PDocument mDocument;