I think it's safe to say most of us have experienced this while playing spellcasters.. You're blasting away at monsters in close quarters, using a bouncing bolt spell. Then a single slip of the finger and you shoot the bolt in the wrong direction, making the bolt bounce between two close walls and you get hopelessly fried to death. Since no player character smart enought to cast spells would intentionally do this, I think it would be feasible to add some kind of prevention mechanism for it. Like a code that calculates behorehand the approximate damage you'd be causing to yourself with the (mis)selected direction (hope my english and idea makes sense), and if it exceeds a certain amount (like 1/3 of current hp), there would be a message displayed "You are going to cause yourself considerable damage by casting the spell in that direction. Do you still want to proceed? Y/n"

Besides this there's also the issue that the PC never dodges/evades their own bounced missiles. Is that a bug?