Cannot Add Firefox Add-ons to Toolbar or Overflow

I believe the problem is with specific add-ons, that do not appear, I tried with different ones, and re-start the browser and re-install can show some of them.
Yes, I have many add-ons, browser is not sluggish, but some add-ons do not show on toolbar after install.
Hopefully, it is just add-on related problems, but this problem can be solved easily with a 'show on toolbar(y/n) menu.
Thanks.

Can you post a link to an add-on that is behaving in this suspicious manner?

Video DownloadHelper – Get this Extension for 🦊 Firefox (en-US)

P.S.: Uninstall, re-install helped on this one. And the other one apparently didn't show because it shows on webpage only, it didn't have show on toolbar option in the add-on so as I said in my post

IMayNeed said:

P.S.: I accept the possibility that I am missing something. ]

, I was missing something. It wasn't Firefox.

For anyone having this issue, I found a solution: Just install an earlier version of Firefox Developer. I am using Firefox Developer version 109.0b9 and this issue is resolved:)

That's not a solution.

OP, I have the same issue in Firefox 112 on my parent's computer I just built for them. On my computer I have Firefox 108 and the issue is not present. The issue for me is now the uBlock add-on extension no longer shows up above right in the toolbar.

This issue is more than likely some happy ass Dev who thinks they are being creative by snipping out and changing code for the sake of "change." Firefox used to be my number one go-to browser until around circa 2008. Now I jungle between Pale Moon, Firefox and UnGoogled Chromium because some websites use Google web components and other stupid lazy crap and Pale Moon can't render it. Well, a lot of websites are depending on Google's BS which is very bad. Google is systematically taking over the whole of the Internet one piece at at time. Need SEO (Search Engine Optimization) for your website? You better hope Google allows it... Same for Bing et al.

I've been meaning to research a remedy for this BS in Firefox. Once I do, and if no one has posted a solution, I'll post what I found. That is if I find anything to hack Firefox back to the way it was.

PS:

It's getting so bad with browsers nowadays that one needs to know code so they can take the open source code and make it how they want. I smell a business opportunity... "Custom Code LLC - For all your custom code needs... We'll take Firefox or other open source code and make it how YOU want it to be..."

Of course I can hear the BS now, "you can't charge for open source code!" No, I'm charging for the service, not the code. LOL! I'll probably still end up getting sued by an a-hole though.

Callender said:

I just remove that button. Note: Using Librewolf 112.0.1 (Firefox Fork)

Then buttons show in toolbar.

Fantastica, fantastique, fantastisch, fantástica! That Pref also exists in Firefox 108.

Well, looks like the Mozilla a-holes removed that Pref, and I can't for the life of me figure out how to add a Pref without messing with Prefs.js. Traditionally you could just right click inside about:config. But being the a-holes Mozilla are they change things for the sake of change and F the whole damn lot up! Pisses me off! Still just one reason why Pale Moon is my everyday driver. F77k Firefox!