Multi-Ligual Domain

Hello,

Am migrating 5 different installs of ghost into on hosted solution.
We are making progress but wanted to check on the forum for a hurdle we have hit.

So we have:
https://spotahome.ghost.io/fr/blog/
and the article all have the correct URLs:

But the tags pages are not on the correct url path
/blog/tag/etudiant/#fr
It should be:
/fr/blog/tag/etudiant/
Any tips on how to make the tags work correctly to?

Cheers,
Robert