[Update post] i managed to recreate the text corruption glitch by having my pokemon faint inside another pokemon's hitbox
I am by no means a technical expert with these things, but this one is really interesting and I'm glad we figured it out! When your pokemon faints while you're standing on the side of/inside another pokemon's hitbox, your trainer isn't in proper position to send out your next pokemon, and i'm wondering if it might cause some collision with all the hitboxes? It could be trying to send out crobat within blissey's hitbox before it displays crobat being sent out in the overworld or something to that effect. If anyone more knowledgeable than me could produce a solid explanation, i'd really appreciate it 😁😁