[Bug]: First login attempt with Mozilla Firefox (on MacOS) is ignored

[oliverhummel]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When I open a fresh session with a Mozilla Firefox browser and try to login to Nextcloud the first attempt is completely ignored. The page reloads and when I enter the credentials again, everything works fine. I have noticed this behaviour on two separate Nextcloud instances, we operate at our University. Both are on the latest version (with German language pack).

Unfortunately, I'm not the admin of neither of these instances, but I tried to find a solution with one of the admins who told me that he doesn't even see the login attempt in the logs.

With other browsers (such as Chrome) it seems to work fine. So no idea whether this is a bug in Nextcloud or Firefox, but I decided to start here. ;-)

Steps to reproduce

1. Take a Mozialla Firefox (122.0 in my case) on MacOS (14.2.1) and start a fresh session with a Nextcloud server.
2. Enter credentials on login screen. Press the "Log in" button.
3. Page seems to load, but it reloads the login screen, no matter whether the credentials were correct or not.
4. The second login attempt works as expected.
5. Trying this after e.g. a successful logout or when there was a recent session with the Nextcloud server it also works fine.

Expected behavior

I would expect to either get logged in after step 2 or get a bad credentials message.

Installation method

None

Nextcloud Server version

26

Operating system

None

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

No response

List of activated Apps

No response

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

No response

[joshtrichards]

Can you check your browser console for any clues? And the Network tab as well (while reproducing the problem).

[oliverhummel]

I can't reproduce the problem right now, as it only used to happen when I didn't login to the system for a few days. I'll try it again in a few days and close this, if it doesn't happen again (Firefox has updated to 122.0.1 in the meantime).

[oliverhummel]

I was a able to reproduce the bug with one login again, please find below the one message that occured on the browser console, although I cannot tell what its relation with Nextcloud might be. The output of the web developer console is also listed below.

The network analysis tab is showing me a Post request (to file "login"), which resulted in an error 303. However, this happens with a successful (second) login as well.

In an buggy first login there appears a redirect like e.g. as follows: https://clousi.hs-mannheim.de/index.php/login?redirect_url=/index.php/apps/files/&direct=1&user=XXXXXX

In a normal login the next connection is to .../apps/dashboard/.

Does this help in any way?

---

Browser Console:

Unable to find target with innerWindowId:1479616233583 2 watcher.js:188:13
    getWindowGlobalTargetByInnerWindowId resource://devtools/client/fronts/watcher.js:188
    _getTargetForWatcherResource resource://devtools/shared/commands/resource/resource-command.js:905
    _onResourceUpdated resource://devtools/shared/commands/resource/resource-command.js:780
    _emit resource://devtools/shared/event-emitter.js:242
    emit resource://devtools/shared/event-emitter.js:186
    emit resource://devtools/shared/event-emitter.js:330
    onPacket resource://devtools/shared/protocol/Front.js:349
    onPacket resource://devtools/client/devtools-client.js:471
    send resource://devtools/shared/transport/local-transport.js:67
    makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103
    makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103

Web Developer Console:
JQMIGRATE: Migrate is installed, version 3.4.0 jquery-migrate.min.js:2:969
jQuery is deprecated: The global jQuery is deprecated. It will be removed in a later versions without another warning. Please ship your own. globals.js:59:15
$ is deprecated: The global jQuery is deprecated. It will be removed in a later versions without another warning. Please ship your own. globals.js:59:15
Backbone is deprecated: please ship your own, this will be removed in Nextcloud 20 globals.js:59:15
Handlebars is deprecated: please ship your own, this will be removed in Nextcloud 20 globals.js:59:15
Proxying an event bus of version 3.0.2 with 1.3.0 index.es.js:2337:14
jQuery is deprecated: The global jQuery is deprecated. It will be removed in a later versions without another warning. Please ship your own. 2 globals.js:59:15
session heartbeat polling started session-heartbeat.js:103:9