Profile Equipment "Sort by: Used" places a mastered item after unmastered/unowned

[the_ladybug]

Nekros currently stand out like a sore thumb in my profile equipment for being mastered, and yet having a short laundry list of things I haven't managed to build and level yet show up in the list when it is sorted by "Used".

Completed 415/455

My mastered Nekros comes after the unowned, unleveled and unmastered: Akbolto Prime, Akbronco Prime, Boar Prime, Carrier Prime, Caustacyst, Dakra Prime, Detron, Dual Kamas Prime, Embolist, Euphona Prime, Hema, Mag Prime, and Nami Skyla Prime.

Nekros:

Used 0.0%

XP 916,413

Kills 0

Kill Assists 3

Might it be the fact that his kills are at 0? He is somehow the only frame that I have leveled that has 0 ability kills. I don't have the non-prime version anymore to test if killing something with him would fix the bug either.