Cursor misaligns when display scaling is changed

• 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: MacOS Mojave 10.14.5
• Hyper.app version: 3.0.2 (stable)
• Link of a Gist with the contents of your .hyper.js: https://gist.github.com/jakubka/7b08efc99a92845433e52e84a95a538c
• Relevant information from devtools (CMD+ALT+I on macOS, CTRL+SHIFT+I elsewhere): N/A
• The issue is reproducible in vanilla Hyper.app: Yes, I don't have any plugins and I am using default .hyper.js config

Issue

When display scaling is changed on a Mac, the cursor is no longer where it should be.

Display scaling settings can be found in System Preferences -> Display -> Display tab -> Resolution: scaled.

This screencast will explain it better:

Notes:

• this only happens with webgl renderer
• it breaks even when the hyper app isn't open
• restarting hyper or even the whole mac doesn't fix it

The issue names no source file or test; first reproduce it in Hyper's WebGL renderer by changing macOS display scaling, then locate the cursor coordinate-handling entry point. Done means the cursor remains aligned after scaling changes, including when Hyper is restarted.