id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	phab_field
3374	Non-tree Maps and Sets are not serialized properly	Itms		"The `Map` and `Set` JS containers are not serialized properly when they contain multiple references to the same object. The backref system is broken for them, probably because of our custom implementation that has a flaw.

Attached are:
* A patch introducing a new test which currently fails,
* A patch and a commands.txt for reproducing the error.
They apply to r16929."	defect	new	Must Have	Backlog	Core engine			sanderd17 Yves