[🐛 BUG] Changes are not reflected after a reassignment

[FlorianJacta]

What went wrong? 🤔

A user has tried to reassigne variable after assigning it through a visual element, but it didn't work. After a refresh of the page, this assignment is seen.

Expected Behavior

This should reassign the variable as the developper wants it. The code works if instead of a string, we try to assign a list.

Steps to Reproduce Issue

The variable should always be "...". After a refresh, "..." appears.

import taipy.gui.builder as tgb
from taipy.gui import Gui, invoke_callback, get_state_id

lov_additional_info = ["...", "Contact", "Methodology", "Training"]
selected_additional_info = lov_additional_info[0]


def select_additional_info(state):
    print(state.selected_additional_info)
    state.selected_additional_info = lov_additional_info[0]
    print(state.selected_additional_info)


with tgb.Page() as page:
    tgb.selector(
        value="{selected_additional_info}",
        id="additional_info_selector",
        lov="{lov_additional_info}",
        label="Click for additional info",
        dropdown=True,
        on_change=select_additional_info,
        class_name="fullwidth m-half",
        # multiple=True,
    )


def on_change(state, var_name, var_value):
    print(var_name, var_value)


Gui(page).run()

Version of Taipy

4.0.2

Additional Context

Acceptance Criteria

• A unit test reproducing the bug is added.
• Any new code is covered by a unit tested.
• Check code coverage is at least 90%.
• The bug reporter validated the fix.
• Related issue(s) in taipy-doc are created for documentation and Release Notes are updated.

Code of Conduct

• I have checked the existing issues.
• I am willing to work on this issue (optional)