Properties with localized constraints are not correctly rendered when using metadata-templates in documentlibrary

I'm trying to use a localized list contraint to use in my customization.

I've defined a constraint like this:

<constraint name="my:gender" type="LIST">
<parameter name="allowedValues">
<list>
<value>male</value>
<value>female</value>
</list>
</parameter>
</constraint>

And the localization is like this
listconstraint.my_gender.male=Male
listconstraint.my_gender.female=Female

If I add the custom field using that list constraint in a metadata-template, like bellow, the documentLibrary component always shows the internal value (male/female) and not the localized ones (Male/Female).

<line index="10" id="customField">

</line>

In all the others forms (view properties, edit properties, create new document), the property is correctly shown.

The problem only happens in documentLibrary list.