Complex rewrites do not work in httpNowhere mode on Firefox #16358

Type: code issue

Platform

Firefox 61.0.2 (64-bit) on debian 9; technically should affect tor browser if they supported upgradeToSecure

Step to reproduce

1. Visit http://marketwatch.com/ with "Block all unencrypted requests" checked

2. Expect URL rewritten to https://www.marketwatch.com/ because of an existing rule

3. Got expired certificate errors

Apparently. this does not affect chromium browsers, nor Firefox with HTTPSE with default settings, likely a regression from #15157. Will submit a fix soon #16122 .