First a bit of context, I wanted to play Kopp with my touchscreen which works completly fine normally so i launch the game create a new save file and begins to play, then comes the moment to get and accept the first quest, i pass the first couple dialogue and when i thing the popup for the quest would show up, the begining of the dialogue begins again.
I continue thinking it was just a bug and then when i go to add enemies to the fight, instead of adding just one enemy, it spawns two.
In fact i think that when creating my characters i missed half of the playable characters for the character ability.

I precise that with a mouse this problem doesn't occur and that i already reinstalled the game to see if it was just the installation that was bugged but no.

If you have any solutions or explanations i would be glad to hear them.

(PS: sorry if i make gramatical mistakes, english isn't my main language)