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Drag and drop some BPMN shape into Lane 1 or Lane 2 .
The collectionChange event arguments do not have parentId information in the element property (args.element.parentId).
We expect information in the arguments about which Lane is the parent of the element being laid.
We checked that nodes collection (diagram.getObject('swimlane').shape.lanes.children) doesn't contains added shape on event collectionChanged and drop event as well