(Bug) Failed to open Unity Hub if no wifi connection

I found that when you at the environment that is no wifi connection available like this then you will not able to open Unity Hub. You will see Unity Hub process at Task Manager but you will never see the Unity Hub UI appears. I also found another problem that if you successfully open Unity Hub with wifi internet connection then no wifi connection anymore, the UI will keep stucking at Loading state forever and you cannot open any project. Currently I'm using latest 1.4.0.

 

No problem on my site; I just disconnected from the internet and started the Hub.

​

 

I also got this problem, but I also can't open github desktop/vs code with no network connected.
After digging out on internet this might be the issue on electron. https://github.com/electron/electron/issues/6437
Seems only affected windows 10 os

Edit: the bug I encountered is the first one (can't open the hub), not the second one

 

Where can I get the logs? I believe it's Unity Hub bug instead of license update problem as I can open Unity Editor directly without any issue at offline.