do not draw \n characters

src/gui/Window.cc

@@ -421,7 +421,8 @@ void Window::draw_buffer()
             uint32_t character = *cursor;
             if ((character != 0xFFFFFFFFu) &&
                     (character != ' ') &&
-                    (character != '\t'))
+                    (character != '\t') &&
+                    (character != '\n'))
                 draw_buffer_character(screen_column, screen_row, character);
         }
         if (!cursor.go_right(1, false))