Ability/Nature glitch

Is there a glitch in this game that causes your pokemon’s nature/abiliies to change? I specifically remember my ponyta having flash fire and a speed boosting ability but now it’s sassy and has run away.

Not that I’m aware of. Are you sure it’s the same Ponyta? You didn’t catch a second one and get them confused or something?

Nah, it’s the same ponyta. Also my friend had this problem with golem. We’re both new players.

Hm… maybe it is a glitch, but a new one. I haven’t played for a while, so it could be from the last update.