Since the last Opera updates, I can't connect to https://github.com :

I enter my username and password, then my two-factor authentication key and it redirects me to the home page, without being logged in.

This is very embarrassing since I use the github services several times a day as part of my job, and at the moment I have to open another browser such as Google Chrome to get an access to github.com.

As you probably know, having two different browsers open at the same time is counter productive, as I am accustomed to Opera.

Would you have any idea why this issue might have appeared lately ?

I didn't encounter the issue on other websites though.

My current computer specs and Opera version are the following :

• Version: 37.0.2178.54 - Opera is up to date
• Update stream: Stable
• System: Mac OS X 10.11.4 64-bit

Thanks a lot in advance for your answers !