I've found that occasionally interacting with the rifts doesn't give me the buff required to give eligibility for the achievement associated with the area. I'm having a real hard time with the ones in Sandswept Isles not giving the buff at all.
Occasionally if I finish the rift with the buff, the buff just goes away and doesn't award credit for completing the rift, forcing me to repeat it. This is after collecting all the balls of magic.
It's extremely difficult to collect the magic balls in certain areas, being that the balls are a yellowish gold, they tend to blend into the skybox or background a lot, making it harder to be able to see them. I have nigh on full vision. I can't imagine what it'd be like for the visually impaired with the white/gold on orange background. Not to mention how hard it is to see the almost completely transparent end rift.
EDIT: A new one happened just now. I got the buff for the achievement, got all the balls up to the end, but the end purple rift doesn't spawn.
Having a super hard time with two of the rifts in Sandswept, every other area so far has been ok. The one just above Anniogel Encampment wp and the one just west of Atholma wp are the troublemakers. I've received the Mistborn Mote from completing both of them, but neither has given me the achievement for it.
Disagreement =/= "negativity"
Criticism =/= "hate"