To reproduce use the following function to reset the data source of the treeview
public void LoadObjects()
{
    radBreadCrumb1.DefaultTreeView = null;

    tvObjects.DataSource = null;
    
    tvObjects.DataSource = GetTable();
    tvObjects.DisplayMember = "Name";
    tvObjects.ValueMember = "Name";
    
    radBreadCrumb1.DefaultTreeView = tvObjects;
}

Workaround:
public void LoadObjects()
{
    radBreadCrumb1.DefaultTreeView = null;

    MethodInfo mi = typeof(RadBreadCrumb).GetMethod("value_Selected", BindingFlags.Instance | BindingFlags.NonPublic);
    Delegate delegateToRemove = Delegate.CreateDelegate(typeof(RadTreeView.RadTreeViewEventHandler), this.radBreadCrumb1, mi);

    this.tvObjects.TreeViewElement.SelectedNodeChanged -= (RadTreeView.RadTreeViewEventHandler)delegateToRemove;

    mi = typeof(RadBreadCrumb).GetMethod("value_NodeExpand", BindingFlags.Instance | BindingFlags.NonPublic);
    delegateToRemove = Delegate.CreateDelegate(typeof(RadTreeView.TreeViewEventHandler), this.radBreadCrumb1, mi);

    this.tvObjects.TreeViewElement.NodeExpandedChanged -= (RadTreeView.TreeViewEventHandler)delegateToRemove;
 
    tvObjects.DataSource = null;
    
    tvObjects.DataSource = GetTable();
    tvObjects.DisplayMember = "Name";
    tvObjects.ValueMember = "Name";
    
    radBreadCrumb1.DefaultTreeView = tvObjects;
}