Expiration time removal?

After the addition of the Saga 2, both daily shadow mission quests gave me seals that don't have a timer. However, the seals I had before the update stiltl have their expiration timers, and I can't stack the non-expiring ones with the expiring ones.

Was this intentional or a side effect (possibly unintended?) of the fractal well dye expiration time removal?

Given that they worked as currency even when expired, it was most likely intentional, but probably not a change NA was aware of.