Message input for logic gate isn't working wellhttp://www.flowlab.io/game/play/892343
For this example, look in object "cursor" toward the bottom under its movement stuff, the cursor will play annoying beep sounds while it's off any blue square, but you'll notice it won't stop playing the sound. The NOR is using message input from a proximity sensor detecting a blue square in its grid, and its the message logic that's messing it up. Just unwire the messages and hook the NOR directly to the proximity sensor and it will work (the NOR won't output anything/the sound will turn off while on blue squares). In both cases it is the same input going to the NOR, but with messages the NOR's output remains on.
This happens the same with messages being sent from other objects, and with NAND as well, I haven't tested any of the other gates