in the attached video you see wild charge being used its not just on seel also happened with psyduck i dont know if its just pikachu's wild charge or it happens with any pokemon using wild charge i do know that recoil shouldnt be twice i have leftovers as you see on pikachu as well to kinda not lose so much hp while using it.
Video link
https://www.dropbox.com/s/31a9uqz52atv972/Pokemon%20Rev%20Bug%20Wild%20Charge.mp4?dl=0
if video link does not work email me and i shall send it via email.