I upgraded the grid to the latest version and started having problems with the panel.
If you use the collapse setting with the top direction, simply the button on the right side above does not appear, and if you click to close the panel, it gives an error that cannot read properties.
Sample code below:
console.clear();
const panelConfig = {
appendTo : document.body,
height : '20em',
width : '40em',
header : 'Panel header',
collapsible: {
direction: 'top'
},
html : `A HTML content`,
};
const panel = new Panel(panelConfig);