id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
35173	DisallowedModelAdminLookup raised when filtering with __isnull on a ForeignKey not listed in list_filters	Stian Jensen	Hisham Mahmood	"A regression in Django 5.0 was previously reported and fixed, relating to filtering foreign keys in django-admin in the URL, when not manually declared in list_filters:
https://code.djangoproject.com/ticket/35087

There is at least one more issue I'm still having, that is still problematic in Django 5.0.2:

Filtering by whether or not a foreign key value is set also used to work for any foreign key on the model.
`/admin/core/invoice/?client__isnull=True`

In Django 5.0.2 this provides an error similar to the error reported in 35087."	Bug	closed	contrib.admin	5.0	Release blocker	fixed		Sarah Boyce	Ready for checkin	1	0	0	0	0	0