I use flet plotly to draw the graph, and the same piece of code sometimes shows the graph and sometimes not

[1ajie1]

Duplicate Check

• I have searched the opened issues and there are no duplicates

Describe the bug

Code sample

Code

import plotly.express as px
import pandas as pd
import flet as ft
from flet.plotly_chart import PlotlyChart

def main(page: ft.Page):

    # def add_chart(e):
    #     charts_list.controls.append(PlotlyChart(fig, expand=True))
    #     print(len(charts_list.controls))
        # page.update()
    df = pd.DataFrame({
        'time': [1990, 1997, 2003, 2009],
        "cpu_usage": [20, 30, 25, 35],
    })
    fig = px.line(df, x="time", y="cpu_usage")

    charts_list = ft.ListView(expand=1, spacing=10, padding=20, auto_scroll=True)
    charts_list.controls.append(PlotlyChart(fig, expand=True))
    charts_list.controls.append(PlotlyChart(fig, expand=True))
    charts_list.controls.append(PlotlyChart(fig, expand=True))
    page.add(charts_list)
    page.update()

ft.app(target=main)

To reproduce

运行命令：flet.exe run --web --port 8888 .\tmp\tmp1.py -d

Expected behavior

No response

Screenshots / Videos

Captures

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Operating System

Windows

Operating system details

windows 11

Flet version

0.25.1

Regression

I'm not sure / I don't know

Suggestions

No response

Logs

Logs

 warnings.warn("remove second argument of ws_handler", DeprecationWarning)
D:\python\miniconda\envs\flet-learn\Lib\site-packages\kaleido\scopes\base.py:188: DeprecationWarning:

setDaemon() is deprecated, set the daemon attribute instead

D:\python\miniconda\envs\flet-learn\Lib\site-packages\websockets\legacy\server.py:1177: DeprecationWarning:

remove second argument of ws_handler

Additional details

No response