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
21794	No warning should be raised when defining an abstract model with no app_label	Simon Charette	Aymeric Augustin	"Since those models are never registered and meant to be used by different apps it doesn't make much sense to raise a warning in this case.

I think this case was just overlooked when Aymeric refactored app-loading.

Attaching a patch fixing the issue and removing an extra space between `in` and `INSTALLED_APPS` in the warning message."	Cleanup/optimization	closed	Database layer (models, ORM)	dev	Normal	fixed	app-loading	Aymeric Augustin	Accepted	1	0	0	0	0	0