UserAgent: Mozilla/5.0 (X11; CrOS x86_64 9460.34.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.47 Safari/537.36
Platform: 9460.34.0 (Official Build) dev-channel setzer

Steps to reproduce the problem:
1. On a computer with touchscreen go to http://baps.toybot.nl/
2. Click/press on toggle fullscreen button to enter the flash plugin full screen mode
3. Try drawing on the canvas using touch

What is the expected behavior?
Expected is that lines are drawn when you move you finger over the screen. I've added the output of catched events and when you press and move the press event is not forwarded to the flash plugin. If you tap, it is forwarded to flash (you can see a mouse down and up event). If you use the mouse or trackpad on the computer you will see the expected results.

What went wrong?
It looks like chrome is blocking drag event in full screen mode. Also keyboard input is no longer forwarded in full screen mode.

Did this work before? Yes Chrome 57

Does this work in other browsers? Yes

Chrome version: 59.0.3071.47  Channel: n/a
OS Version: 9460.34.0
Flash Version: 26,0,0,89

Here a link to the bug at adobe's bug tracker:
https://tracker.adobe.com/#/view/FP-4198432

A workaround would be using webkit full screen, I've added a button in the example to demonstrate this.
 

Deleted: bin-debug.zip 22.3 KB

bin-debug.zip 22.3 KB Download