Unable to Press Space Within Button Componet

try adding components like this

components: [
	{
		tagName: 'button',
		classes: ['gjs-button'],
		components: [
			{
				selectable: true,
				editable: true,
				tagName: 'span',
				type: 'text',
				content: 'edit me'
			}
		]
	}
],

That's a nice simple solution - worked a treat.