User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:73.0) Gecko/20100101 Firefox/73.0

Steps to reproduce:

Access a page on raw.githubusercontent.com using an extension that requires host permissions
e.g. https://raw.githubusercontent.com/greasemonkey/greasemonkey/master/peg.txt

Such as the attached userscript in Greasemonkey/Tampermonkey

Can also reproduce with https://addons.mozilla.org/firefox/addon/hashzilla/ which uses tabs.executeScript:

• select text and right-click menu selection

Actual results:

Extensions cannot access host permissions on any raw.githubusercontent.com URLs

Error: Missing host permission for the tab

Despite the permissions match <all_urls> or "*://*/*"

Expected results:

should be able to access raw.githubusercontent.com pages with corresponding <all_urls>, "*://*/*" match patterns

originally reported at https://github.com/greasemonkey/greasemonkey/issues/3065#issuecomment-583906478

Duplicate of bug 1411641