I can think of a few examples myself, such as fines for business daring to exposing public banners in Spanish [1] or the impossibility to study with Spanish as a vehicular language [2].

[1] https://www.google.com/amp/www.lavanguardia.com/politica/201...

[2] https://www.google.com/amp/www.elconfidencialautonomico.com/...