Disguise Help.

Hello! I am use Disguise and have bug.

my config:
test:
Type: SHULKER
Disguise:
Type: BLOCK
Block: STONE
BlockData: 0
ModifyBoundingBox: true
Health: 5

bug:

i am use MythicMobs 4.2.0-SNAPSHOT and LibsDisguises 9.4.0-SNAPSHOT