Arcanist - No validation error for 2 conflicting archetypes

[TheMaskedFerret]

After having applied the Eldritch Font and Spell Specialist archetypes, which have overlapping replacements of arcanist exploits at 7th and 13th level, but there are no validation errors with these conflicting replacements.
((Reported))

I also note that, after applying the Eldritch Font archetype, you can still Add the Spell Specialist archetypes, even though they have overlapping arcanist exploits and should not be applicable at the same time.
((Reported))

These both apply to HLO, HLC, and HL iPad