Children of immigrants born in Mayotte, the French overseas territory situated between Madagascar and the African mainland, will no longer automatically become French citizens, Interior Minister Gerald Darmanin said late on Sunday.
“It will no longer be possible to become French if one is not the child of French parents”, Darmanin told journalists upon his arrival on the island, announcing the scrapping of birthright citizenship there - a first in recent French history.
I don’t know about the rest of the developed world, that’d be interesting to know. EDIT: the wiki page has a nice map of the world giving this info https://en.m.wikipedia.org/wiki/Jus_soli
To answer your question, it would cause it to deviate from the rest of France, be it mainland or overseas France. All the territories have “jus soli”, but Mayotte already had lessened rights compared to the rest.
But this would need a revision of the constitution, to specifically remove this right from Mayotte. It’s possible that it may not pass though, given the controverse it created.