When clicking the “Add file” button right on https://gist.github.com/, the page hangs indefinitely. I tried Microsoft Edge and Internet explorer, it makes no difference. I don’t know anything about web development, I have no idea how I could debug this and provide additional information.
I can only see in my task manager that one CPU core is entirely being used by my browser.
In case it helps:
Microsoft Edge 42.17134.1.0 Microsoft EdgeHTML 17.17134 Internet Explorer 11.0.85
How can I find out what is causing this and how to fix this?