diff --git a/src/SessionController.cpp b/src/SessionController.cpp
--- a/src/SessionController.cpp
+++ b/src/SessionController.cpp
@@ -206,6 +206,8 @@
     connect(_session.data(), &Konsole::Session::getBackgroundColor,
             this, &Konsole::SessionController::sendBackgroundColor);
 
+    connect(_session, &Konsole::Session::primaryScreenInUse, view, &Konsole::TerminalDisplay::usingPrimaryScreen);
+
     _allControllers.insert(this);
 
     // A list of programs that accept Ctrl+C to clear command line used
diff --git a/src/TerminalDisplay.h b/src/TerminalDisplay.h
--- a/src/TerminalDisplay.h
+++ b/src/TerminalDisplay.h
@@ -625,6 +625,15 @@
      */
     void setUsesMouse(bool on);
 
+    /**
+     * Sets _isPrimaryScreen depending on which screen is currently in
+     * use, primary or alternate
+     *
+     * @param use Set to @c true if the primary screen is in use or to
+     * @c false otherwise (i.e. the alternate screen is in use)
+     */
+    void usingPrimaryScreen(bool use);
+
     void setBracketedPasteMode(bool on);
 
     /**
@@ -917,6 +926,7 @@
     bool _showTerminalSizeHint;
     bool _bidiEnabled;
     bool _mouseMarks;
+    bool _isPrimaryScreen;
     bool _bracketedPasteMode;
 
     QPoint _iPntSel;  // initial selection point
diff --git a/src/TerminalDisplay.cpp b/src/TerminalDisplay.cpp
--- a/src/TerminalDisplay.cpp
+++ b/src/TerminalDisplay.cpp
@@ -2745,17 +2745,17 @@
         return;
     }
 
-    // if the terminal program is not interested with mouse events:
-    //  * send the event to the scrollbar if the slider has room to move
-    //  * otherwise, send simulated up / down key presses to the terminal program
-    //    for the benefit of programs such as 'less'
+    // If the program running in the terminal is not interested in mouse events:
+    //  - Send the event to the scrollbar if the slider has room to move
+    //  - Otherwise, send simulated up / down key presses to the terminal program
+    //    for the benefit of programs such as 'less' (which use the alternate screen)
     if (_mouseMarks) {
         const bool canScroll = _scrollBar->maximum() > 0;
         if (canScroll) {
             _scrollBar->event(ev);
             _sessionController->setSearchStartToWindowCurrentLine();
             _scrollWheelState.clearAll();
-        } else {
+        } else if (!_isPrimaryScreen) {
             // assume that each Up / Down key event will cause the terminal application
             // to scroll by one line.
             //
@@ -3107,6 +3107,12 @@
     return _mouseMarks;
 }
 
+
+void TerminalDisplay::usingPrimaryScreen(bool use)
+{
+    _isPrimaryScreen = use;
+}
+
 void TerminalDisplay::setBracketedPasteMode(bool on)
 {
     _bracketedPasteMode = on;