I was delighted early (. Your method  works for panels, but does not work for individual buttons nested in a panel. In another way, I can hide the entire panel, but individually, only the “slider-tab” node cannot be hidden according to your method.  Do you have other options?
Sincerely,
Oleg I

docking.layout = [
{
type: ‘LayoutGroup’,
orientation: ‘horizontal’,
items: [
{
type: ‘LayoutGroup’,
items: [
{
type: ‘LayoutPanel’,
id: ‘inputPanel’,
label: ‘Input’,
items: [{
label: ‘TextBox Tab’,
content: ‘<smart-multiline-text-box id=”multiLine”>Write more text here …</smart-multiline-text-box>’
},
{
label: ‘Slider Tab’,
content: ‘<smart-slider id=”slider”></smart-slider>’
}]
},