Accidentally pressing enter in a dialogue prompt can kill a PC or lose all of their gold
If you press enter when recharging wands the game will use maximum PP (not current PP) easily killing the PC. (And even if it used current PP that's not something players want to do, you accidentally press enter a lot more than you need the feature)
Same thing when improving stats with garth, press enter accidentally and say goodbye to 50k gp for almost no gain (oh you'll get one stat increase for all of your money).
I suggest remove the enter feature completely from these situations, they do not happen so often that the feature would be needed to begin with. If the player wants to use all of his money then he can explicitly input that, same thing with PP.