Checklist

• I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
• This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

When opening a new window with a form, the newly-created form hangs and does not render any of the form until i click into an entry.

How to reproduce

1. Use the beta version
2. Run the attached code with go run main.go
3. Observe the attached video's behavior.

Screenshots

Notice that once my mouse hovers over the entry (not the entry label) and clicks that I can then see the form properly

Example code

package main

import (
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/widget"
)

func makeForm(a fyne.App) {
	form := widget.NewForm(
		widget.NewFormItem("Name", widget.NewEntry()),
	)

	w := a.NewWindow("Edit User")
	w.Resize(fyne.NewSize(375, 150))

	form.OnSubmit = func() {
		w.Close()
	}

	w.SetContent(container.NewVScroll(form))
	w.Show()
}

func main() {
	a := app.New()
	window := a.NewWindow("Bug Test")
	window.Resize(fyne.NewSize(400, 200))
	window.SetMaster()

	vbox := container.NewVBox(
		widget.NewButton("Change Data", func() {
			makeForm(a)
		}),
	)

	window.SetContent(vbox)
	window.ShowAndRun()
}

Fyne version

v2.6.0-beta1

Go compiler version

1.24.1

Operating system and version

Arch Linux, Kernel 6.13.5, X11 Window Manager

Additional Information

I have not tested this with other windows/containers, but I can 100% reproduce this with any form widget.