Proximity sensors no longer work

[Ion Mage]

I saw this discussed on Discord, but was told to make a report here as well.  I tried making a proximity sensor/remote signaller assembly to create a device that would send a signal in case anyone walked by it.  Could be used to alert if someone was entering a place thats meant to be off limits or some such. 

The assembly never worked.  It would send a signal when I dropped it, but never when I walked over it.  Further testing showed the remote signallers were functioning fine and beeped when signalled.

Someone else on discord's #imcoder channel was able to confirm this.