Version: Version 54.0.2826.0 canary (64-bit)
OS: Windows 7

What steps will reproduce the problem?
(1) Visit chrome://settings/siteSettings/javascript
(2) Add a "Block" exception for http://*
(3) Refresh the page

Expect to see my JavaScript permission exemption listed in the Block Section

Actual: Block Section gone entirely.

DevTools console shows script errors:

site_list.js:321 Uncaught (in promise) TypeError: Cannot read property 'host' of null(…)(anonymous function) @ site_list.js:321toSiteArray_ @ site_list.js:318processExceptions_ @ site_list.js:244(anonymous function) @ site_list.js:229
site_list.js:321 Uncaught (in promise) TypeError: Cannot read property 'host' of null(…)(anonymous function) @ site_list.js:321toSiteArray_ @ site_list.js:318processExceptions_ @ site_list.js:244(anonymous function) @ site_list.js:229
site_list.js:321 Uncaught (in promise) TypeError: Cannot read property 'host' of null(…)(anonymous function) @ site_list.js:321toSiteArray_ @ site_list.js:318processExceptions_ @ site_list.js:244(anonymous function) @ site_list.js:229
site_list.js:321 Uncaught (in promise) TypeError: Cannot read property 'host' of null(…)