Pipokid

I have found a thread where someone mentions his party is bugged as he cant have pokemon leave his party (I cant even move the pokemon around in my party). I have the same issue. His solution was to trade away the pokemon, however I dont want to trade away my pokemon. Does trading a pokemon back work? Or is there another fix? Interesting fact: the 2 pokemon I cant move are 2 pokemon from my box that were caught in Kanto. Right now I am playing through Johto and am not able to use Kanto pokemon yet. I did have 2 free spots in my party

I have seen 2 older posts that address this issue (from 2016), but since there was no reply I am posting it again. Right now with my own sandshrew, I am using rollout in fights, but the power is not doubled on each consecutive hit as it is supposed to.

When fighting against trainers and other wild pokemon, if you switch to another pokemon and win the fight, the experience you gain is halved. Not both pokemon get halve experience, but the total experience you get is halved and that amount is shared over the 2 pokemon. That is at least my experience with it. Is this on purpose? Because when switching I feel like losing a lot of exp.