I imagine this this will be with the extension and not the runtime.
If have lots of rapid touches, they do not always release.
I had unexplained bugs that were driving me mad but finally sussed it and it was touches not releasing.
I created a simple app with a counter and Always set counter to number of touches.
Normal touches it functions as expected with the counter showing the number of fingers of the screen.
Rapid touches however, rapping your fingers on the screen however, all touches do not release.
For my test I rapped my fingers on the screen for a few seconds and got the counter up to 25.
It stayed at 25 when I was not touching the screen so the screen thinks it has 25 touches on it.
/edit while typing, I tried it again.
With 3 fingers touches accumulate.
With 2 they actually decrease.
I had the device registering negative touches.
This is quite a serious issue as it has the potential to pretty much screw up any app relying on multi tiuch.
The device I'm testing on is the HTC One X + with Jellybean 4.1.
