Is this an intended feature?

Using Eevee 143/191 im not able to evolve to tera sylveon. Additionally i was using eevee as well as Terapagos Ex against Uxie's Painfull memories. This attack puts 2 counters on all pokemon. Terapagos Ex has a "precursor" near the HP stating "As long as this pokemon is on your bench, prevents all damage done to this Pokemon by attacks (both yours and your opponents's)."