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
31265	Bug in ModelAdmin.render_change_form()'s has_file_field check.	Tatiana Vasilevskaya	nobody	`ModelAdmin.render_change_form()`'s `has_file_field` check instantiates a formset form without calling `get_form_kwargs` in `admin_formset.formset.form().is_multipart()` and thus might fail in case of a customized `__init__` of the formset form (designed to be used with the customized `get_form_kwargs`). Cherry-pick of https://github.com/django/django/commit/7c3a8b9db2ccfbb247732ce6726ab8dc11eff34d into 2.2.x fixes the problem.	Bug	closed	contrib.admin	2.2	Normal	invalid			Unreviewed	0	0	0	0	0	0