The bug
While the other turtle potion items are named in the form "Potion of the Turtle Master," the arrow is named "Potion of The Turtle Master."
item.minecraft.tipped_arrow.effect.turtle_master => Arrow of The Turtle Master
MC-125579
Tipped turtle potion arrows inconsistently capitalize "The"
Resolved
Fixed
4
Confirmed
Minecraft 18w07b, Minecraft 18w07c, Minecraft 18w08a, Minecraft 18w08b, Minecraft 18w09a, Minecraft 18w10c
Minecraft 18w15a
Retrieved
Affects 18w09a