I finally completed enough Fals Arms Urgent Quests to finally, FINALLY get the Psycho Wand. I received 10 Rainbow Astracite from completing the UQ. I had 44 more in storage. I retreive them all from storage, I rush to the Astracite Exchange shop to pay the 50 Astracite for the wand I've been chasing for weeks and....

49 Rainbow Astracite.

I should have 54, where the hell did the other 5 go?! Has this ever happened to anyone else?