This works great for holding down for a few seconds, but after I am holding for a longer period of time, say 10 seconds and let go the "up" event never gets sent to the computer, so the button is held down indefinitely.

As if that wasn't bad enough, pressing the button does nothing and is completely unresponsive for almost a minute after that. After you wait a minute or so the button comes back to life and you can press it to get out of the constant keypress state you've entered.

But.... if you hold it down for more than ~7-10 seconds or so you're back in another state of being unable to release the keypress and the cycle repeats.

Why is this happening? How can we fix it?
The button works flawlessly for hours at a time as long as you keep the button held down for just a few seconds at a time.