Firefox Headless - Not Working

While running firefox headless mode in Katalon 5.7.1, the browser is launched and the test cases are failed without any action being performed, where as Chrome is working fine.

Env Details: Mac Book Pro
OS: Mac OS Sierra 10.13.6
Katalon: 5.7.1

Which Firefox version you are using?

Here is my try using Firefox 62. In case you are still having problems, please post your execution logs as well

Screen Shot 2018-09-24 at 09.38.06.png

Hi Vinh, I have restarted the system and my firefox is 61. its working fine now.

Thanks for the help.