Duplicate Potion glitch

[The_Very_Best]

After I used a potion on my Geodude, it showed that his HP went down. After going back the battle though, the potion worked, so it was just a small glitch in his HP bar. (sorry if something similar has already been posted) Also sorry there is no image, but nothing would really help show this.

 

[Tornado9797]

After I used a potion on my Geodude, it showed that his HP went down. After going back the battle though, the potion worked, so it was just a small glitch in his HP bar. (sorry if something similar has already been posted) Also sorry there is no image, but nothing would really help show this.

This is a known bug. This is a side-effect of the pre-battle calculation bug: the game briefly displays the outcome of a turn to you before it executes. This includes net HP gain though Potion use. For example, the enemy will deal 21 HP, but you use a Potion in that turn, the game will show you losing 1 HP.