Drag and drop functionality doesn't work for task bars in hidden parent element

[marciogurka]

Forum post

"Hello,

It seems that there is an issue in internal Brynum "IsVisible" funcion which relies on "visibility" css property on parent elements to indentify if the Gantt component is visible or not. But if a parent element has "hidden" value for "visibility" property, it doesn't necessary mean that the Gantt component is not visible.

Please run the following commands on a Bryntum Gantt demo example (https://bryntum.com/products/gantt/examples/frameworks/react/javascript/basic/build/)

$('body').style.visibility = 'hidden'
$('#container').style.visibility = 'visible'

Then try to move the task bars and make sure that the drag and drop feature doesn't work anymore.

This is a real issue in our case."