On behalf label / Honoree Title / Honoree Description not translatable on contribution page

In the contribution page, Title tab configuration, it's not possible to translate the content of :

• Honoree Section Title
• Honoree Introductory Message

To clarify a bit :

• There are no i18n fa-language icon (like in footer message above)
• When switching language, it displays the proper language value for those fields but it updates the default language anyway

The information is not stored in a typical database column so we can't use the standard way of translating :

SELECT * from civicrm_uf_join 
WHERE entity_table = 'civicrm_contribution_page';
+----+-----------+----------------+---------------------------+-----------+--------+-------------+-----------------------------------------------------------------------------------------------------------------------------+
| id | is_active | module         | entity_table              | entity_id | weight | uf_group_id | module_data                                                                                                                 |
+----+-----------+----------------+---------------------------+-----------+--------+-------------+-----------------------------------------------------------------------------------------------------------------------------+
| 45 |         1 | soft_credit    | civicrm_contribution_page |         1 |      1 |          13 | {"soft_credit":{"soft_credit_types":["1","2"],"en_US":{"honor_block_title":"Dedicate Your Donation","honor_block_text":""}}} |
+----+-----------+----------------+---------------------------+-----------+--------+-------------+-----------------------------------------------------------------------------------------------------------------------------+
4 rows in set (0.00 sec)