Issues with BorderLayout on mobile web

[hkparker]

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

I'm not actually sure if this is one bug or two, so apologies if I'm wrong on that, but top part of a border layout has multiple issues on mobile web as far as I can tell. So far I've noticed:

1. a label doesn't appear
2. buttons aren't clickable

Let me know if I should split these out into two tickets!

How to reproduce

fyne serve

view on desktop web, notice you can see "Header" and click on the buttons to change to content

view on mobile web, notice that you cannot see "Header" nor click any buttons

Screenshots

Example code

package main

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

func main() {
	myApp := app.New()
	window := myApp.NewWindow("Title")
	window.Resize(fyne.NewSize(1024, 1024))

	title := widget.NewLabel("Header")
	title.Alignment = fyne.TextAlignCenter

	welcomeContent := container.NewStack(widget.NewLabel("welcome page"))
	secondContent := container.NewStack(widget.NewLabel("second page"))
	secondContent.Hide()

	var welcomeButton *widget.Button
	var secondButton *widget.Button
	welcomeButton = widget.NewButton("Welcome", func() {
		secondContent.Hide()
		welcomeContent.Show()

		secondButton.Importance = widget.LowImportance
		secondButton.Refresh()
		welcomeButton.Importance = widget.MediumImportance
		welcomeButton.Refresh()
	})
	secondButton = widget.NewButton("Second Page", func() {
		welcomeContent.Hide()
		secondContent.Show()

		welcomeButton.Importance = widget.LowImportance
		welcomeButton.Refresh()
		secondButton.Importance = widget.MediumImportance
		secondButton.Refresh()
	})
	secondButton.Importance = widget.LowImportance

	buttons := container.NewCenter(container.NewHBox(
		welcomeButton,
		secondButton,
	))

	header := container.NewVBox(
		title,
		buttons,
	)

	main := container.NewVScroll(container.NewStack(
		welcomeContent,
		secondContent,
	))

	window.SetContent(container.New(
		layout.NewBorderLayout(header, nil, nil, nil),
		header,
		main,
	))

	window.Show()
	myApp.Run()
}

Fyne version

2.5.3

Go compiler version

go1.23.4 linux/amd64

Operating system and version

Arch Linux / Android 15 / Chrome

Additional Information

No response