Tree widget jumping to top when selecting element the first time

[sdassow]

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

The first click on a tree item makes the tree jump to the top.

How to reproduce

1. Run example code below
2. Open first branch of the tree called foo
3. Scroll to the end of the foo branch
4. Select last element
5. Observe the tree widget jumping to the top

Screenshots

Screen.Recording.2025-01-29.at.14.59.31.mov

Example code

package main

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

func main() {
	a := app.New()
	w := a.NewWindow("Hello World")

	treeIDs := map[string][]string{
		"": []string{"foo", "yay"},
		"foo": []string{
			"bar", "meh", "baz", "oops", "aaa", "bbb", "ccc", "ddd",
			"eee", "xxx", "zzz", "uuu", "iii", "ggg", "fff", "what",
			"ever", "this", "needs", "to", "be", "a", "long", "list",
		},
		"yay": []string{"lala", "lol", "haha", "ha"},
	}

	tree := widget.NewTree(
		func(id widget.TreeNodeID) []widget.TreeNodeID {
			if id != "" {
				return treeIDs[id]
			}
			r := []string{}
			for _, k := range treeIDs[id] {
				if len(treeIDs[k]) == 0 {
					continue
				}
				r = append(r, k)
			}
			return r
		},
		func(id widget.TreeNodeID) bool {
			return len(treeIDs[id]) != 0
		},
		func(bool) fyne.CanvasObject {
			return widget.NewLabel("")
		},
		func(i widget.TreeNodeID, _ bool, o fyne.CanvasObject) {
			o.(*widget.Label).SetText(i)
		},
	)

	w.SetContent(tree)
	w.Resize(fyne.NewSize(400, 400))
	w.ShowAndRun()
}

Fyne version

develop / fba693b

Go compiler version

go1.23.3

Operating system and version

MacOS Sonoma (14.7.1)

Additional Information

No response

[dweymouth]

Fixed by the above PR

[andydotxyz]

Hage put it in the fixes milestone in case we do 2.5.5