site.translations is empty object when no translation reference (e.g. {% t elem.md %}) is included in the page

[giulioambrogi]

Workflow:
1- Create new project with jekyll new mysite
2- Add plugin following the docs and add 2 languages en and it
3-In the index.html page just add {{site.translations.size}} to display the languages supported
-> Result: 0 - no languages supported?
-> Expected: 2
4- Create a translation file /_i18n/en/test.md and reference it in index.html as {% t test.md %} and fill it with some text
-> Now {{site.translations.size}} = 1
5- Remove the text from test.md but leave it there
-> Now {{site.translations.size}} is back to 0
6- same happens with the other languages