Ok, after I’ve marked this topic as solved, I’ve found something else…
The problem is due to an ACF field group which is attached to all my pages (rule is : show when publication type is page). Whatever the field into or the field type, it will ever clear myy post title. So I put it in trash for my website to work.
I’ve tried to create again this fieldgroup, in vain, same problem as before.
Nevermind, I can live without this field, but it’s a very strange behavior indeed. I imagine, anybody else can’t reproduce this behavior ?
