Full trace:
``` Uncaught TypeError: can't access property "clone", draggedDOMNode.occurrence is undefined
onDragStart chrome://calendar/content/widgets/calendar-dnd-widgets.js:146```
Bug 1697492 Comment 0 Edit History
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Full trace:
```
Uncaught TypeError: can't access property "clone", draggedDOMNode.occurrence is undefined
onDragStart chrome://calendar/content/widgets/calendar-dnd-widgets.js:146
```
It's not immediately clear why the month day box needs to be dragable.