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
22539	Model.full_clean() mutates exclude argument	maggotfish@…	nobody	"If model.full_clean() gets a list argument for `exclude`, and after running clean_fields() errors are raised, it appends the names of those fields to the `exclude` argument, mutating it and causing a really bad side effect which is not expected by the user.

Instead, the list should be copied if it is not None."	Bug	closed	Database layer (models, ORM)	dev	Normal	fixed			Accepted	1	0	0	0	1	0