[Mastery Test 13 bug with Zephyr]

I just leveled up to where could I do mastery test 13, did a few practice rounds on Larunda Relay and found it to be easiest using Zephyr. I completed the mastery test on my second try (first one I messed up on flying around), but right as I killed the last enemy I flew off the platform, and fell. It respawned me for my third attempt. The enemy counter said x/0, which if I remember correctly increased as I killed enemies, but despite killing all 16 it didn't allow me to complete the mission. I flew and landed around for a bit until all the platforms disappeared, which resulted in a white screen and no success or fail result. 

EDIT: Upon aborting the mission, I did receive mastery rank 13.