UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Platform: 11316.66.0

Example URL:
express.smarttech.com

Steps to reproduce the problem:
1. Open a new notebook file at the URL express.smarttech.com
2. Click on the pencil tool
3. Drag to Draw a line

What is the expected behavior?
Using the touch screen it should draw a line from the starting point of your finger to the point where you lifted the finger off the screen.

What went wrong?
Browser treats it like pressing the back button. The drag command if going left to right, shows the back button prompt as if on a regular page.

I am able to "click" on the page with my finger and make a dot or select a tool but no drag functionality.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? Yes Flash

Did this work before? Yes 71, or 70

Does this work in other browsers? N/A

Chrome version: 72.0.3626.49  Channel: beta
OS Version: 72.0.3626.49
Flash Version: 32.0.0.114

It worked until recently. We moved a bunch of chromebooks onto the beta channel and the next weekend we had this problem arise.

I believe this is only an issue with flash as other sites and apps with drawing that don't use flash have full functionality.