UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36

Steps to reproduce the problem:
1. Run codebender from their website
2. compile and upload a program right after Chromebook reboot (it will work)
3. try to upload program to arduino board again app just says working and looses all communications with hardware

What is the expected behavior?
3. Should just re-establish communication and re-upload code to target board 

What went wrong?
Just says "working"

Did this work before? Yes ChromeOS previous version.

Chrome version: 63  Channel: n/a
OS Version: 62​.0.3202.97​
Flash Version: 

Codebender says it it can be any other version for it to work