bug: flet 0.70.0.dev6370 keeps showing "Working" during startup.

[lunengcheng]

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Describe the bug

When I use the Flet version 0.70.0.dev6370 with PyCharm 2025.1.3 and Python 3.10, after opening the following code, I often encounter a situation where the interface keeps loading with "Working". After closing and restarting, it sometimes starts normally. May I ask everyone what the problem is? Thank you very much.

Code sample

import flet as ft

def main(page: ft.Page):
page.title = "Flet counter example"
page.vertical_alignment = ft.MainAxisAlignment.CENTER

input = ft.TextField(value="0", text_align=ft.TextAlign.RIGHT, width=100)

def minus_click(e):
    input.value = str(int(input.value) - 1)
    page.update()

def plus_click(e):
    input.value = str(int(input.value) + 1)
    page.update()

page.add(
    ft.Row(
        alignment=ft.Alignment.CENTER,
        controls=[
            ft.IconButton(ft.Icons.REMOVE, on_click=minus_click),
            input,
            ft.IconButton(ft.Icons.ADD, on_click=plus_click),
        ],
    )
)

ft.run(main)

To reproduce

Expected behavior

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Operating System

Windows

Operating system details

win11

Flet version

0.70.0.dev6370

Regression

I'm not sure / I don't know

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Additional details

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