Upper-right corner icons have reappeared

[Odin2]

My Firefox was configured to remove the icons in the upper-right corner [minimize, restore, maximize], but now they're back. How can I now remove them?

[dickvl]

Is other code in your userChrome.css still working since you appear to have more problems recently ?
https://www.userchrome.org/what-is-userchrome-css.html

You can check whether this pref to enable userChrome.css and userContent.css in the chrome folder is still set to true on the about:config page.
toolkit.legacyUserProfileCustomizations.stylesheets = true
https://www.userchrome.org/firefox-chan ... e-css.html

[Odin2]

Thanks, dickvl. I do have other problems. I've now changed toolkit.legacyUserProfileCustomizations.stylesheets from false to true. I've also changed browser.urlbar.quantumbar to false. Jscher has other suggestions in the link you provided (https://www.userchrome.org/firefox-chan ... e-css.html), but those are not comprehensible to me at the state of my knowledge. That's true also of the suggestions at https://linuxtidbits.wordpress.com/2009 ... n-firefox/. What I have changed has not helped.

Most of my settings are satisfactory, but I can't get rid of the X in the active tab title and I still have the corner icons I wrote about here. I'm willing to reconstruct my profile, but I don't want to lose my settings and other data. Do you have any suggestions?

[jscher2000]

This is like trying to solve a Rubik's cube with a blindfold on.

[dickvl]

Did you create a new profile for Firefox 78 ESR since you wrote in other threads that you switched from release (89/90) to ESR (78)?

There are differences between 78 and 90 and a lot of code in userChrome.css that worked in 90 won't work in 78, so you need to start with a fresh file and use code for 78.
We can't help you to figure out what changes you need, so if you do not have a backup from the time you used 78 as release then you will have to learn how to use the Browser Toolbox.
https://developer.mozilla.org/en-US/doc ... er_Toolbox

[Odin2]

Did you create a new profile for Firefox 78 ESR since you wrote in other threads that you switched from release (89/90) to ESR (78)? . . . if you do not have a backup from the time you used 78 as release then you will have to learn how to use the Browser Toolbox.

No, I don't have a Firefox backup from that time. I've examined your link re Browser Toolbox and I do not have a clue how to use it to solve. As I've indicated, most of my settings are okay--the only really bothersome ones are the X buttons within active tab titles and the three (hugely spaced) icons in the upper right of the screen.

I'm prepared to switch back now to the release version if I can avoid losing my settings etc. that I've reconstructed. Would that be possible? Or in my state of ignorance must I stay with ESR and its unwanted deviances forever?

Also: If I do stick with ESR can I expect again to lose my settings etc. the next time ESR updates? If Yes, how could I avoid that?