"Not Secure" text not shown with Onion+http iframe normal site with all security.insecure_connection_* options enabled

  1. Enable them security.insecure_connection_* options in about:config with Tor Browser 8.0a9.
  2. Go to neverssl.com just to test, you'll see the "Not Secure" text in the address bar (without clicking on the info bar), just like this: https://web.archive.org/web/20180210095051if_/https://i.stack.imgur.com/lY6e4.jpg
  3. Go to Onion+http iframe normal site but them text not shown. :'(

(BTW ticket legacy/trac#25204 (moved) for enabling them options on them browsers)