Motorcycle Bugged

I have had happen 3 times now when I pull my motorcycle out of my house garage or leave my house and get on the motorcycle 1 to 3 min later the bike starts going wonky and i get thrown from it randomly.

I think I know what you’re talking about, but don’t think this is something we can fix. If you fall off of it and get right back on the same thing happens, it will just throw you off of it for no apparent reason.