I still see it (screenshot attached). Do you use any tab-related extensions that might tweak the context menu or modify any tab-related features?

Do you have at least one group created and have given this group a name?

jscher2000 said

I still see it (screenshot attached). Do you use any tab-related extensions that might tweak the context menu or modify any tab-related features?

No, I don't, I have a persona and noscript.

cor-el said

Do you have at least one group created and have given this group a name?

I have 4 of them

Zalriva1 said

When I rightclick mouseclick on a tab, the context menu no longer offer to move that tab to another group. This is new since 38.05 Why was this feature depricated?

Just to add a little more info, here's a screenshot

jscher2000 said

I still see it (screenshot attached). Do you use any tab-related extensions that might tweak the context menu or modify any tab-related features?

What version of Firefox and Windows are you running?

I've got Fx 38.0.5 on Win 7 x64.

Have you ever created a userChrome.css file to modify Firefox's user interface? That's the only other method that comes to mind to hide a menu item. You can look for such a file this way:

Open your current Firefox settings (AKA Firefox profile) folder using either

• "3-bar" menu button > "?" button > Troubleshooting Information
• (menu bar) Help > Troubleshooting Information
• type or paste about:support in the address bar and press Enter

In the first table on the page, click the "Show Folder" button. This should launch a new window listing various files and folders in Windows Explorer.

Look for a folder named chrome and, if you find it, double-click into it.

Any userChrome.css file there? If so, you could open it in a text editor and view its contents to see whether it looks familiar.

Or perhaps your program files were damaged in the upgrade. That happens from time to time, with unpredictable results. To remedy that, i suggest:

Clean Reinstall

We use this name, but it's not about removing your settings, it's about making sure the program files are clean (no inconsistent or alien code files). As described below, this process does not disturb your existing settings. Do NOT uninstall Firefox, that's not needed.

(1) Download a fresh installer for Firefox 38.0.5 from https://www.mozilla.org/firefox/all/ to a convenient location. (Scroll down to your preferred language.)

(2) Exit out of Firefox (if applicable).

(3) Rename the program folder:

(64-bit Windows folder names)

C:\Program Files (x86)\Mozilla Firefox

to

C:\Program Files (x86)\OldFirefox

(32-bit Windows folder names)

C:\Program Files\Mozilla Firefox

to

C:\Program Files\OldFirefox

(4) Run the installer you downloaded in #1. It should automatically connect to your existing settings.

Can you get Firefox reinstalled?

Note: Some plugins may exist only in that OldFirefox folder. If something essential is missing, look in these folders:

• \OldFirefox\Plugins
• \OldFirefox\browser\plugins

Zalriva1 said

jscher2000 said

I still see it (screenshot attached). Do you use any tab-related extensions that might tweak the context menu or modify any tab-related features?

What version of Firefox and Windows are you running?

jscher2000 said

I've got Fx 38.0.5 on Win 7 x64. Have you ever created a userChrome.css file to modify Firefox's user interface? That's the only other method that comes to mind to hide a menu item. You can look for such a file this way: Open your current Firefox settings (AKA Firefox profile) folder using either

• "3-bar" menu button > "?" button > Troubleshooting Information
• (menu bar) Help > Troubleshooting Information
• type or paste about:support in the address bar and press Enter

In the first table on the page, click the "Show Folder" button. This should launch a new window listing various files and folders in Windows Explorer. Look for a folder named chrome and, if you find it, double-click into it. Any userChrome.css file there? If so, you could open it in a text editor and view its contents to see whether it looks familiar.

---

Or perhaps your program files were damaged in the upgrade. That happens from time to time, with unpredictable results. To remedy that, i suggest:

Clean Reinstall

We use this name, but it's not about removing your settings, it's about making sure the program files are clean (no inconsistent or alien code files). As described below, this process does not disturb your existing settings. Do NOT uninstall Firefox, that's not needed.

(1) Download a fresh installer for Firefox 38.0.5 from https://www.mozilla.org/firefox/all/ to a convenient location. (Scroll down to your preferred language.)

(2) Exit out of Firefox (if applicable).

(3) Rename the program folder:

(64-bit Windows folder names)

C:\Program Files (x86)\Mozilla Firefox

to

C:\Program Files (x86)\OldFirefox

(32-bit Windows folder names)

C:\Program Files\Mozilla Firefox

to

C:\Program Files\OldFirefox

(4) Run the installer you downloaded in #1. It should automatically connect to your existing settings.

Can you get Firefox reinstalled?

Note: Some plugins may exist only in that OldFirefox folder. If something essential is missing, look in these folders:

• \OldFirefox\Plugins
• \OldFirefox\browser\plugins

Thank you very much, the clean install fixed it.