UserAgent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3654.0 Safari/537.36

Steps to reproduce the problem:
1. Open https://ives-fourth-symphony.com and go to view-source.
2. In source view, search for 'href=favicon' and 'href=manifest'. 2 favicons will be found, 1 manifest will be found.
3. Click on each href

What is the expected behavior?
Clicking on the favicons and manifest.json hrefs should open those resources in a new tab.

What went wrong?
Chrome 71.0.3578.98
===================
Success: Each link opens in a new tab

Canary 73.0.3654.0
==================
Failure: Neither resource is fetched by clicking on the links:

Did this work before? Yes Chrome 71.0.3578.98

Does this work in other browsers? N/A

Chrome version: 73.0.3654.0  Channel: canary
OS Version: 6.3
Flash Version: 

I discovered this while auditing the site in question with Lighthouse. Lighthouse could not fetch the manifest.json file for any of its PWA tests. I then opened the view-source and tried clicking on the href links for manifest.json and the favicons...those sources would open to a blank tab (i.e., failure). I then ran Lighthouse and performed the same href-clicks on the view-source in Chrome 71, and had success. Canary 73 seems to be at fault.