1587105 - Extensions content script not shown in pdf viewer

Status: RESOLVED DUPLICATE of bug 1454760

(WebExtensions :: Untriaged, defect)

Description

[anatli]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36

Steps to reproduce:

1. Add to firefox a new extension for testing (Load temporary addon).
   *Manifest contains following:
   "content_scripts": [
   {
   "matches": ["<all_urls>"],
   "all_frames": true,
   "css": ["mystyle.css"],
   "js": [
   "myscript.js"],
   ...

2. Open a pdf file (automatically opened in default pdf viewer)

3. Open developer tools

4. Go to debugger section

Actual results:

The extensions content scripts are not there (not visible nor loaded in developer tools).

*In order to check if it had something to do with CSP, I tried disabling it at about:config, but it didn't work

Expected results:

We should find the extensions content scripts in there.

*Works fine in Chrome (both with/without pdf viewer) and in other pages in Firefox which do not use pdf viewer