Joystick deadzone too low
I tried playing the game with a joypad (xbox 360 controller) and most of the time, Link will continue moving even when not interacting with the joystick. This often happen in games where the deadzone value is set too low. SDL axis values go from 0 to 32768, a common deadzone value is 8000. I tried looking at the source code (without going too much into details) and I saw that axis values where ignored under 10000. If the deadzone value really is 10000 then that's kinda weird and this bug shouldn't happen.