Don't tell us that the settings are still available, just install this add-on or edit your configuration! You know that the Options dialog provides a safe way to fine tune Firefox to suit a users needs or tastes. A few versions back, the powers that be changed the pop-up windows settings as well. This meant that I was still getting pop-up windows no matter how things were set. Since the default settings allowed removal of toolbars and made pop-ups follow the automatic setting (whatever that means), pop-ups are almost always diverted to a new window.
What is the point of having a tabbed browser if new windows are opened. I can't even move a pop-up back to the main window any more because the tab bar is often disabled. Yes, one can copy and paste the URL to a new tab, but sometimes the scripting breaks because it's not the originally defined window. This was not a problem when I could drag the tab into the main window.
Some settings were removed due to a breakage of Firefox when used by uninformed/unaware users. See - http://limi.net/checkboxes-that-kill/
The only cure at this time are indeed add-ons. See the following add-ons to easily add-back those on/off switches removed in Firefox 23:
The removal of items in the past are not likely to return.
One further note.
You can send a very short comment to the developers by using the following on the Firefox menu - Help > Submit Feedback
You will NOT receive a response to your feedback comment.
First, let me say that I appreciate the comments.
Second, the Setting Sanity add-on does return some settings to the Preferences panel. Take not that Quick Java does not; instead it adds it's own preferences settings through it's add-on preferences.
Hopefully, more add-on authors will work on add-ons that return preferences, and perhaps add more, to the Preferences panel. If I had more time and a greater understanding of creating add-ons and those that can safely be exposed outside of the about:config interface, I would create those myself.
I won't mark this as solved because I feel that it is not. I hope that more people can add helpful comments until this question is eventually closed to comments.
Hello see also the Bug 851698 - (checkboxes-that-kill) Get rid of options that kill our product
and 2 more add-ons :