https://github.com/AdvancedCustomFields/acf/issues/32

acf-issue-32.patch

diff --git a/includes/api/api-template.php b/includes/api/api-template.php
index bfd0fd2..259885c 100644
--- a/includes/api/api-template.php
+++ b/includes/api/api-template.php
@@ -162,7 +162,7 @@ function get_field_object( $selector, $post_id = false, $format_value = true, $l
 *  @param	$strict (boolean) if true, return a field only when a field key is found.
 *  @return	$field (array)
 */
-function acf_maybe_get_field( $selector, $post_id = false, $strict = true ) {
+function acf_maybe_get_field( $selector, $post_id = false, $strict = false ) {
 	
 	// init
 	acf_init();