Ok, I think I got it ! I had created this stylesheet but didn't update the template, I suppose.

Hi @Jdlrobson, thanks again for your help on this task ! I quote myself to ask you a last helping hand on this : the template NavigatioBilinguis should work the same as you did on the french wikisource. I tried, but... couldn't reach the same result, so it's still using the deprecated buttons (here is an example).
I hope you started well the new year, I'm sorry to ask you again !

Thanks a lot for looking at this little project ! I hope it will be an improvement of bilingual editions on WS:FR o/
You can do as you want, but I think you could edit the template and see what's going on the pages where I've included it ? I made 3 types of transclusion :

• the french one (example : a section in french)
• the bilingual one (example : the same section with the two languages shown, latin imported from Vicifons)
• the latin one, on Vicifons (example : the section in latin (for this one, it's not important, because if you manage to upgrade the template on WS:FR, it will be the same for his equivalent NavigatioBilinguis).

Hey Jdlrobson !
Yes, it's exactly the result I'd like to see for the NavigationBilingue Template ! These tabs are appropriate.
I just had found a "solution" using a button, and created this template, but the timing was really bad with its deprecation in the same month...

See the template that doesn't apply anymore in the Main space on WS:FR : https://fr.wikisource.org/wiki/Mod%C3%A8le:Bouton_cliquable
So another template is impacted.

See also on Vicifons, the same issue with a copy of the template using buttons : there