id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
2159	self._positions is None	Eric Pettersen	Tristan Croll	"While trying to reproduce the maybe-double-model-delete error, instead I was able to reproduce the self._positions-is-None error with the attached script.
"	defect	closed	moderate		Graphics		fixed						all	ChimeraX