if I add multiple entries with edit mob drops I only see the first entry not the ones after it but they do drop from the mobs
# Single mob items, in the form EntityName:modid:itemName:[metadata]:[nbtfile]:[minStackSize]:[maxStackSize]:[chance] [default: ]
S:"Single Mob Items" <
minecraft:Zombie:minecraft:dragon_egg:0::1:1:100
minecraft:Zombie:minecraft:skull:0::1:1:20
minecraft:Zombie:minecraft:slime_ball:0::1:1:25

I will only see the dragon egg of the ones added