[Other✓] Problems when tries to release a pokémon

[_Hiroshi]

It's my first romhack and I using Fire Red 1.0, but I'll be direct:

In a box, when I try to release an pokémon, after the animation, the sprite become around 1 pixel and nothing happens after that, it remains in the box or at the party.

I don't know what could causes this and I found nothing explaining how to solve (I hope there is a way).

Edit: After testing some backups, I found out that it was probably some Advanced-Text corruption. I'll look for some other tool...