Hanging when behind a proxy with authentication

• I am on the latest Hyper.app version
• I have searched the issues of this repo and believe that this is not a duplicate

• OS version and name: Windows 10 Build 14393.693
• Hyper.app version: 1.2.1
• Link of a Gist with the contents of your .hyper.js: https://gist.github.com/julianonunes/43558260b32de2e8d19cbc7e6470e416
• Relevant information from devtools (CMD+ALT+I on Mac OS, CTRL+SHIFT+I elsewhere): N/A
• The issue is reproducible in vanilla Hyper.app: Is Vanilla

Issue

I just downloaded the app and installed, and when I run, after a few seconds it just freezes. I'm behind a corporate proxy using authentication and this often causes problems with Node.js applications that require internet access (but IMHO, I should be able to use Hyper in "disconnected mode").