Hello!
I've encountered a bug that, unfortunately, allows you to complete the “Collect 10 Nowhere Keys” challenge with just a single “Unformed Planar Key.”
In short, depositing and withdrawing the Unformed Planar Key from the bank to your EQ and back counts toward the “Collect 10 Nowhere Keys” challenge.
Video:
https://youtu.be/jC3OzJESL5Q