Translateble Nav Items - Twill 2.5.4

[chammaofficial]

Hello mates, I am very new to twill CMS as I am major in .NET framework. however, one of requirements came up for me to provide an additional functionality for a website runs in twill CMS.

The requirement is client need to add nav links for each locale. so what until now what I did was,

1. Modified admin block using translated=>true for link field.
2. Modified database add new link filed to nav_item_translations table.
3. Put link attribute inside of translatedAttributes in NavItem model

Now everything getting saved and retrieved for admin panel correctly. we are using EN and AR langs on this app. EN menu is loading fine. but AR menu is not rendering properly. I mean no names or links coming.

its coming like this. please if anyone could help on this. I really appreciate.

EN Menu :

UPDATE:

like this I am able to render child nav items properly for both languages. but main nav items are still having the issue.

output of this

comes as :