sortable('.sortable', 'disable'); fails (#244)
sortable('.sortable', 'disable'); fails (#244)

Checking the element is draggable on dragstart seems to fix all related issues to the temporary disabling of items.

https://github.com/lukasoppermann/html5sortable/issues/243

lukasoppermann/html5sortable,voidberg/html5sortable,lukasoppermann/html5sortable,voidberg/html5sortable,lukasoppermann/html5sortable