Describe the bug

The new page switching is really nice, unfortunately it doesn't seem to play completely nicely with focus. This may also be user error.

How to reproduce

I ran this two ways to try and understand what was going on, first:

• Run example code (slightly modified from tutorial)
• Observe that the text box is focused as expected and styled to indicate that
• Enter a string and click sign in button
• Observe that the text box on the "home" page is not styled as focused
• Attempt to type some characters slowly one at a time
• Observe that the text box isn't actually focused for the first few key presses
• Click sign out button
• Observe that the text box is not styled as focused this time
• Attempt to type some characters slowly one at a time
• Observe that the text box isn't actually focused for the first few key presses

Second, swap to using SetFocusEvent instead by switching which lines are commented and then:

• Run example code
• Observe that the text box is not styled as focused
• Attempt to enter some characters
• Observe that text box is actually focused
• Click sign in button
• Observe that text box on "home" page is not styled as focused
• Attempt to type some characters
• Observe that the text box is actually focused
• Click sign out button
• Attempt to enter text once again, observing that once again the text box is actually focused but not styled as such

Example code

package main

import (
	"cogentcore.org/core/core"
	"cogentcore.org/core/events"
)

type user struct {
	Username string
}

func main() {
	b := core.NewBody()
	u := &user{}
	pg := core.NewPages(b)
	pg.AddPage("sign-in", func(pg *core.Pages) {
		userField := core.NewTextField(pg)
		userField.StartFocus()
		//userField.SetFocusEvent()
		core.NewButton(pg).SetText("Sign in").OnClick(func(e events.Event) {
			u.Username = userField.Text()
			pg.Open("home")
		})
	})
	pg.AddPage("home", func(pg *core.Pages) {
		core.NewText(pg).SetText("Welcome, " + u.Username + "!").SetType(core.TextHeadlineSmall)
		newField := core.NewTextField(pg)
		newField.StartFocus()
		//newField.SetFocusEvent()
		core.NewButton(pg).SetText("Sign out").OnClick(func(e events.Event) {
			*u = user{}
			pg.Open("sign-in")
		})
	})

	b.RunMainWindow()
}

Relevant output

No response

Platform

Linux