Bean entity in entity reference format rendered node don't render image

When I use entity reference for reference a bean entity in a node, my bean block have textarea field and image field.
It seem the textarea is rendered but not the image.

When I look to the code it seem the bug come from bean_view function where $langcode is undifined ("und").
As it is not null, it doesn't set $GLOBALS['language_content']->language as value and don't find image I uploaded in the field.

My patch fix my problem but I don't know if it don't affect any other usecase.