Ditto bug (visual)

[Tha-Kram]

all I did was poison Ditto, but for some reason the game messed things up
instead of taking HP from Dittos bar, it took down the HP bar of my pokemon
all the way down to the actual HP of Ditto
first I thought Transform was hitting me, then I noticed that it was going down with exactly 12 HP every turn

here are some screenshots of it:

but in the end it turns out that it was just a visual bug, and I got the HP restored of all pokemon:

here's the ditto, of course with 15 HP:

EDIT:
I heard some1 was messing with abilities, could this be Imposter going wrong?

As soon as the user comes into battle, it transforms into its opponent. Imposter copies the target's appearance, cry, moves, Ability, stats (except HP), stat changes, weight

 

[Zywa-Torpeda]

It was a problem yesterday. I battled with PDavis, he poisoned my kingdra, and his poke started to kill itself slowly.

 

[Tha-Kram]

what pokemon did he use?
I would like to check its ability

 

[Zywa-Torpeda]

what pokemon did he use?
I would like to check its ability

There are no abilities in game...

 

[Tha-Kram]

I've heard from the staff that they were testing it while the server was up, and I encountered at least 2 abilities during my battles
but in this case it might have gone wrong

not that you have to care about that, all I ask of you is to give me the name of the pokemon PDavis used during battle

 

[Andreyy]

f it is a problem with visual venom very tiring in itself.
I imagine that with maintaining it fixed.
One was funny envenar the opponent and die one too jeje

:-\ :-\

 

[Unseatedname]

The ability damp is in game