Spell: Watery Double bugs

[Frumple]

1. The doubles generate hostile to the player, and they can and will attack the caster if they survive killing their target. EDIT: Later testing shows that it would appear what's actually happening is that the double is inheriting the target's hostility state. Targeting a non-hostile with water double will generate a non-hostile water clone.
2. You can sustain considerably more than one double.
3. The spell cannot be canceled, contrary to the spell description.
4. Killing the water double generates a corpse. This can be readily abused for sacrificing purposes, and isn't consistent with other summons behavior, nor the double's reaction to being dispelled (which doesn't leave a corpse.).

Attached save has a number of gremlins in water, as well as a pair of already created water doubles, for testing purposes. There's also a triceratops fairly close by if testing on something harder to kill is desired.