1234188 - chrome/userContent.css have no effect in Firefox 44.0

Status: RESOLVED DUPLICATE of bug 1046166

(Core :: CSS Parsing and Computation, defect)

Description

[gavenkoa]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0 Iceweasel/44.0a2
Build ID: 20151204004006

Steps to reproduce:

I use chrome/userContent.css for styling visited links as describer in https://developer.mozilla.org/en-US/docs/Web/CSS/Privacy_and_the_:visited_selector

It works for Firefox 42.0, 43.0.

Firefox 44.0 and 45.0 doesn't apply any  userContent.css styles at all.

I check if it still touches that file, ant it still is:

bash# inotifywait -m -r chrome/
Setting up watches.  Beware: since -r was given, this may take a while!
Watches established.
chrome/ OPEN userContent.css
chrome/ ACCESS userContent.css
chrome/ CLOSE_NOWRITE,CLOSE userContent.css

My styles during issue investigation are:

:link {
    outline: 1px dotted !important;
    outline-color: blue !important;
}
:visited {
    outline-color: orange !important;
}

*, a, div {
    margin: 100px !important;
    color: green !important;
}

Is there  official statement about userContent.css deprecation?

Comment 1

[gavenkoa]

I grab Firefox versions from http://mozilla.debian.net/dists/

Comment 2

[Gingerbread Man]

(In reply to gavenkoa from comment #1)
> I grab Firefox versions from http://mozilla.debian.net/dists/

Please test the version(s) from mozilla.org.
https://www.mozilla.org/firefox/all/
https://www.mozilla.org/firefox/beta/all/
https://www.mozilla.org/firefox/developer/all/
https://nightly.mozilla.org

―――――

Mozilla/5.0 (X11; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0
20151217102820

Works for me.

Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0
20151221004011

Works for me, provided that e10s is disabled. Otherwise, that's bug 1046166.

Comment 3

[gavenkoa]

  $ wget https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central/firefox-46.0a1.en-US.linux-x86_64.tar.bz2

  $ tar jxf firefox-46.0a1.en-US.linux-x86_64.tar.bz2 -C ~/tmp

  $ mkdir -p ~/tmp/home/.mozilla/firefox/devel/chrome/

  $ cp ~/.mozilla/firefox/devel/chrome/userContent.css ~/tmp/home/.mozilla/firefox/devel/chrome/userContent.css

  $ cp ~/.mozilla/firefox/profiles.ini ~/tmp/home/.mozilla/firefox/profiles.ini 

  $ cat ~/tmp/home/.mozilla/firefox/devel/chrome/userContent.css

:link {
    outline: 1px dotted !important;
    outline-color: blue !important;
}
:visited {
    outline-color: orange !important;
}
*, a, div {
    margin: 100px !important;
    color: green !important;
}

  $ cat ~/tmp/home/.mozilla/firefox/profiles.ini 

[General]
StartWithLastProfile=1

[Profile0]
Name=devel
IsRelative=1
Path=devel

  $ sudo -u nobody HOME=~/tmp/home ~/tmp/firefox/firefox

After that Firefox read userContent.css:

  $ inotifywait -m -r ~/tmp/home/.mozilla/firefox/devel/chrome/
Setting up watches.  Beware: since -r was given, this may take a while!
Watches established.
/home/user/tmp/home/.mozilla/firefox/devel/chrome/ OPEN userContent.css
/home/user/tmp/home/.mozilla/firefox/devel/chrome/ ACCESS userContent.css
/home/user/tmp/home/.mozilla/firefox/devel/chrome/ CLOSE_NOWRITE,CLOSE userContent.css

but doesn't apply any styles!

Firefox v 46.0a1 (2015-12-21).

Comment 4

[Gingerbread Man]

(In reply to gavenkoa from comment #3)
> but doesn't apply any styles!
> 
> Firefox v 46.0a1 (2015-12-21).

Like I said, bug 1046166 affects Firefox Developer Edition and Nightly. It will only work if you've unchecked “Enable multi-process” under Options / Preferences → General and restarted when prompted.

Comment 5

[gavenkoa]

With disabled "multi-process” under Options / Preferences → General I see impact of userContent.css on page styles.

Remain option disabled as workaround.