TodoApp tasks is unscrollable.

[applicatlat]

Since I have sent you a detailed explanation regarding an UI bug with a detailed code snippet and you asked me to shorten it, I shortened the this code as well due that response. Also I would like to remind you that you did not look at that code and closed it without and explanation. Here is the link of it:
#1365

Current issue:
The TodoApp self.tasks = ft.Column() that you shared on the flet.dev does not have scroll funcion. Since you recommended it to add self.expand on a listview project, I did the same and added the self.tasks = ft.Column(scroll=ft.ScrollMode.ALWAYS) but it did not work at all. I also added and init statement and took the the tasks = ft.Column to the main page and started the code via calling it from the main likewise tasks =ft.Column(scroll=ft.ScrollMode.ALWAYS), todo.TodoApp(tasks) however this did not work either. When I use
scroll=ft.ScrollMode.ALWAYS or ADAPTIVE with columns created within main it works but when called from within a class it did not work. I need your help in this. Thank you.

class TodoApp(ft.UserControl):
def build(self):
self.expand=1
self.title_tf = ft.TextField(hint_text=vn.title_str, on_submit=self.add_clicked, width=150)
self.definition_tf = ft.TextField(hint_text=vn.definition_str, on_submit=self.add_clicked, expand=1)
self.tasks = ft.Column(scroll=ft.ScrollMode.ALWAYS)

"""AS YOU """

    print(self.tasks.controls)
    self.filter = ft.Tabs(
        scrollable=False,
        selected_index=0,
        on_change=self.tabs_changed,
        tabs=[ft.Tab(text=vn.all_str), ft.Tab(text=vn.active_str), ft.Tab(text=vn.completed_str)],
    )


    whole_list = sql.database_builder(what_to_do='bring', table_name=table_name, col_name_list=None,
                                      row_number=None,
                                      data_to_insert=None, id_counter_bool=None, col_type_list=None)
    count_int = 0
    if whole_list[2] is not None or whole_list[2] != []:
        for row in whole_list[2]:
            if row[8] == 0:
                task = Task(row[2], row[3], self.task_status_change, self.task_delete, row[1])
                self.tasks.controls.append(task)
                count_int += 1
    self.items_left = ft.Text(str(count_int) + vn.items_title_str)

    # application's root control (i.e. "view") containing all other controls
    return ft.Column(
        width=600,
        controls=[
            ft.Row(
                [ft.Text(value=vn.title_todo_str, style=ft.TextThemeStyle.HEADLINE_MEDIUM)],
                alignment=ft.MainAxisAlignment.CENTER,
            ),
            ft.Row(
                controls=[
                    self.title_tf, self.definition_tf,
                    ft.FloatingActionButton(icon=vn.add_icon_none,
                                            on_click=self.add_clicked
                                            ),
                ],
            ),
            ft.Column(
                spacing=25,
                controls=[
                    self.filter,
                    self.tasks,
                    ft.Row(
                        alignment=ft.MainAxisAlignment.SPACE_BETWEEN,
                        vertical_alignment=ft.CrossAxisAlignment.CENTER,
                        controls=[
                            self.items_left,
                            ft.OutlinedButton(
                                text=vn.delete_completed_str, on_click=self.clear_clicked
                            ),
                        ],
                    ),
                ],
            ),
        ],
    )

[FeodorFitsner]

Could you post a runnable well-formatted example please?