Hey,
I was trying the pokebattle, but the battle start for the opponent in double and for me in single.

Thanks for the report. I am entirely unfamiliar with this, but will pass it along and will get the ticket updated when we know more.

In the mean time, do you have more information? Specific commands required to get this to happen, whether you're testing with multiple players, that kind of thing.

We are unable to reproduce this issue with the given information. If you've got more info, please add it!

(also, make sure you test on 7.0.3, might be fixed already)

Ok so I am trying to setup a server.
so far I am using 3 different things. bungee proxy server, spigot 1.12.2 vanilla server with plugins, and a sponge forge Minecraft server with pixelmon.
along with the pixelmon mod I am using customNPCs, and some permission plugins.

The pixelmon runs great. I have a few protests about a sidemod but this not the place.
While recreating the kanto region i initially used the customNPCs to make the actual trainer npc.
Then in a 2 air block gap below i placed the actual fighting npc.
The idea was to be able to control all of the battles starting and exiting animation screen a little better.
With the bonus of quests!!!!

Well as you can imagine my first assumption is to just have the npc trigger a /pokebattle @p NPC_Trainer
but this would not work. Every attempt made ended with the player fighting a 2v1 or 2v2 battle.
I would much rather be using this command and this setup.
just because the start of the battle is much easier to control.

i can very quickly and easily setup a video or pictures of my process.

A video might be nice. I was able to produce a few issues (erroring out with certain arguments), but can't seem to reproduce any of this with /pokebattle.

Hey,
their is a gif with the problem
https://gyazo.com/27d8783193698ac8aa3210f57430db01
I'm in sp with the 7.0.3 version.

Thank you for your time

So I was going to post this yesterday but didn't want to double post and could not figure out how to edit my own post.
I setup a video for you.
So far i have figured out it has everything to do with the way the command for pokebattle and pokebattle2 read in the jar file.
I honestly love this effect but i would like to choose to turn it off and on so if you manage to fix please put a extra var to switch on and off.
it makes for when people have become un defeatable you can throw 2 power houses up at 1 pokemon and actually force a good fight.

Youtube Video Here

So, to help with this issue, i make a video to show how it works :
[youtube]https://youtu.be/HDSpY1CRlWo[/youtube]
For the step to follow :
Place a Trainer, add at least 1 pokemon (the trainer must have 2 pokemons in the team)
/pokebattle <player> <Trainername>
It start the battle like a Double battle but only for the trainer
Also, its on 7.0.3 so latest pixelmon !

Thanks for that. I've now passed this to internal, and will get this ticket updated when we know more.

Should be fixed for upcoming!