Grey screen when using Tooltip with no message property

[InesaFitsner]

Duplicate Check

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

Describe the bug

Grey screen when using Tooltip with no message property, for exemple, tooltip=ft.Tooltip() or tooltip=ft.Tooltip(enable_feedback=True).

Works ok with empty string: tooltip=ft.Tooltip(message="", enable_feedback=True)

Code sample

Code

import flet as ft

def main(page: ft.Page):
    page.title = "Tooltip example"

    text = ft.Text("Text with tooltip", tooltip=ft.Tooltip())
    page.add(text)

ft.app(main)

To reproduce

1. Run the repro code.
2. See grey screen

Expected behavior

Expecting to see Text with no tooltip.

Screenshots / Videos

Captures

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Operating System

macOS

Operating system details

macOS

Flet version

0.25.2

Regression

I'm not sure / I don't know

Suggestions

No response

Logs

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Additional details

No response