Would be pretty idiotic to not close it, otherwise opening a bookmark would always require a second click to close the popup.

Anyways, you can go to about:config and set browser.bookmarks.openInTabClosesMenu to false - afterwards you can hold Ctrl (or just click the middle mouse button) while clicking a bookmark from such popup and the popup should stay open.

Doesn’t really sound like a company that I would want to do any business with then.

But if you’re using the built-in auto-updater (like people tend to do on Windows and macOS), then it happens automatically in the background, unless you tell the auto-updater to not update automatically.

Definitely does not work that way on my Windows 10 installation. When update is available, Firefox will have a “Restart to install updates” in menu button notification - but the files are not replaced on disk until you actually close (or restart) Firefox and thus Firefox continues to work normally.

What can happen though is that if you run another instance (ie. another profile) of Firefox while the first one has “staged” the update then that another instance can trigger the files to actually be replaced on disk but you would very deliberately do that.

Firefox shouldn’t force you to restart and update like that unless something else, such as your package manager, has already replaced the executable files on your disk. In such a scenario Firefox doesn’t have any option except to inform you to restart it (well I guess it could choose to crash). But the mechanism that forced the update is the package manager.

Felix Mikolasch, data protection lawyer at noyb: “Mozilla has just bought into the narrative that the advertising industry has a right to track users by turning Firefox into an ad measurement tool. While Mozilla may have had good intentions, it is very unlikely that ‘privacy preserving attribution’ will replace cookies and other tracking tools. It is just a new, additional means of tracking users.”

Sigh… I cannot for the life of me figure how anyone could think that enabling PPA (even by default) means that advertising industry has somehow right to track folks. Like dude, the entire point of PPA is that advertisers could then get to know if/when their adverts are working without tracking people.

The argument that “It is just a new, additional means of tracking users” also doesn’t really make sense - even if we assume that this is new means of tracking. I mean, sure it technically is new addition, but it’s like infinity+1 is still infinity - it doesn’t make a difference. The magnitude of this one datapoint is about the same as addition of any new web api (I mean there are lots that shouldn’t exist - looking at you chromium… but that’s besides the point).

File a complaint over use of third-party cookies and actual tracking if you want to be useful - this complaint just makes you look like an idiot.

Also, Servo was originally more or less a testbed for new rendering pathway (webrender) which, when ready, was then integrated into Firefox.

True, and I agree - for this feature to be effective the site-specific rules need to be maintained properly.

All I’m saying is that it leaving some query parameters unremoved is not indicative of the feature not working. If you want to add more query parameters to the removed list then feel free to open a bug about it.

That feature removes parameters that are known to be used for tracking. It does not remove all query parameters willy-nilly. For example on youtube it should remove si, feature and kw parameters as well as a set of parameters on a list that applies to all websites. However, pp parameter is not in that to-be-removed list.

As an example v parameter is for video id on youtube, it would be kinda silly if that was removed, so the feature kinda has to do some site specific action.

Reader mode can show images as well though. I mean, it isn’t always successful in doing so - probably because there’s about a million different ways a random website could show an image - but reader mode can show images that it thinks are part of the actual content.

I’m not seeing any such issue with Nightly on my Fedora system.

Indeed. Also, the auto-open PiP is super nice feature I’ve been using a lot.

I don’t think Firefox Color can do that. At best you could test and set colors using Color, and then export the settings for both as a theme .zip or .xpi files, and then combine the two to a single manifest.json file. Inside the manifest, a "theme" key would be color properties for “normal” theme and "dark_theme" would be for dark-theme. After that you would submit the theme package to get it signed after which it can be installed as a real theme.

You can modify prefs at runtime and have them persist - except those prefs that are also declared in user.js. The problem arises when folks apply whole list of prefs via user.js from one repository or another, which could be hundreds, without acknowledging what prefs they set and without checking what those prefs do. If they then have some reason to change any one of those prefs - their change won’t persist if that particular pref is in user.js

A thing you could do is to just start Firefox once with a user.js file, and then remove that file. On that single startup Firefox sets prefs according to user.js, and all those changes persist to prefs.js when Firefox is shutdown. You are then able to also persist changes to all prefs because by removing user.js Firefox won’t try to override the your session saved prefs with user.js at startup.

Yes. Firefox doesn’t create user.js file itself - if you want one then you need to create it yourself either manually or with some tool. Also, I’ve seen some “security” software create user.js file without notifying the user about it…

What I’m trying to point out here, is that prefs declared in user.js (whether they are put there using scripting or otherwise) cannot be persistently modified at runtime from within Firefox. That may or may not be a huge problem, but something to be aware of.

Sure. For simplified example have only the following in your user.js file:

user_pref("browser.tabs.warnOnClose",true);

1. Start Firefox
2. Observe that the pref is indeed true
3. Go to Setting > General, observe that Confirm before closing multiple tabs is checked
4. Uncheck the option
5. In about:config observe that browser.tabs.warnOnClose is now false
6. Restart Firefox
7. Observe that the pref is again set to true

The reason is also very simple. Firefox will never write anything to user.js - thus any changes you do at runtime will only be stored to prefs.js. However, user.js always overrides prefs.js at startup.

Yes, but that is not what I’m talking about. What I mean is that when Firefox is running and you go to change some setting in say, Settings page, then the new value for that preference is stored into prefs.js (at latest on Firefox shutdown, it might remain only in-memory for some time I’m not sure). Anyway, the new value persists only for that browser session, because on next startup whatever value was set by user.js will override it.

I don’t think that could work. Not unless we are talking about different things, or unless you run their updater script everytime before starting Firefox.

In addition, if you use user.js then you essentially cannot change those settings at runtime (via about:config or otherwise), because your user.js will override the settings on next startup. Maybe that’s desired for some, but good to keep in mind nonetheless.