User blog comment:Dragonjet/KanColle Command Center/@comment-24733367-20140706071508/@comment-202.152.205.57-20140707155805

it happens too when you go support expedition ( 33 / 34 ) and finish sortie before the timer runs out.

also it might not important, when you scrap more than 1 equipment at a time, the equipment count only decrease by 1,  but it goes normal again when going to admiral page.