The "tree" disappears in the "split" after a certain time

[GoHippo]

Checklist

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

Describe the bug

I go to the second tab in the "tab", there I open the "branch" in the "tree", which is located on the left side of the "split". Then I go back to the first tab and wait a little more than 1 minute. Then I check the second tab, and the "tree" disappeared there. If you touch the separator in "split", then "tree" appears.

How to reproduce

1. Go to the second tab in the "tab".
2. Open branch" in "tree".
3. Go to the first tab in the "tab".
4. Wait 1-1.5 minutes.
5. Go to the second tab in the "tab".

Screenshots

No response

Example code

func main() {
    app := app.New()
    win := app.NewWindow("win")
    win.Resize(fyne.NewSize(500, 600))
    win.CenterOnScreen()

    tree := widget.NewTreeWithStrings(map[string][]string{
        "":       {"Result"},
        "Result": {"none"},
    })
    split := container.NewHSplit(tree, container.NewCenter())

    tab := container.NewAppTabs(
        container.NewTabItem("menu", container.NewCenter()),
        container.NewTabItem("list",  split),
    )
    tab.SetTabLocation(container.TabLocationTop)

    win.SetContent(tab)
    win.ShowAndRun()
}

Fyne version

v2.4.4

Go compiler version

1.21.6

Operating system and version

Windows 10

Additional Information

https://github.com/fyne-io/fyne/assets/17017191/73b7c65c-bd42-409e-896c-61640ece4c9f

[andydotxyz]

Looking at eliminating the possible causes can you please remove any container.NewBorder(nil, nil, nil, nil as it adds nothing - widgets will fill the space by default.

[williambrode]

I'm having this issue too and tried fruitlessly to figure out what was going on via the debugger for a few hours. In my case too its a TabItem containing an HSplit containing a Tree. My workaround which appears to fix it is this:

        tabs.OnSelected = func(tab *container.TabItem) {
        if tab == treeTab {
            // Hack to work around https://github.com/fyne-io/fyne/issues/4683
            treeTab.Content.Resize(fyne.NewSize(treeTab.Content.Size().Width+10, treeTab.Content.Size().Height+10))
        }
    }