The major glitch I'm having is that whenever I hold down "B" when exiting a textbox (with an NPC or similar) the player will automatically mount the bike.
I've also had the same glitch occur after battling certain trainers, but I think I can fix that. I may have also been caused by holding down the "B" button.
Thanks CBM as it works fine for me (and, I actually understood part of the things I was doing)
I'll give you credit for this.