id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
21905	Undefined index notices on removal of theme support for custom header or background	obenland		"`_remove_theme_support()` assumes that the `$custom_image_header` and `$custom_background` globals are set, which they are not always. Same goes for the optional `'wp-head-callback'` argument for `add_theme_support()`.

Introduced in [20212]. See [http://themes.trac.wordpress.org/ticket/9199#comment:31 bug report for Twenty Twelve on Themes Trac]."	defect (bug)	closed	normal		Themes	3.4	normal	duplicate