id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
321	Can't fetch from EMDB	Tom Goddard	Eric Pettersen	"open 1080 from emdb

says emdb is an invalid database, because the fetch code was commented out in core/session.py

    #QT disabled
    #from . import map
    #map.register_eds_fetch(s)
    #map.register_emdb_fetch(s)

Looks like this was related to Qt.
"	defect	closed	major		Volume Data		fixed						all	ChimeraX