Allow removing "always open in container" shortcut

[xmo-odoo]

• Multi-Account Containers Version: 8.0.1
• Operating System + Version: Linux Mint 20.2 ("uma")
• Firefox Version: 94.0b9
• Other installed Add-ons + Version + Enabled/Disabled-Status:

amazon@search.mozilla.org
Better Pull Request for GitHub	extension	1.0.35	true	{3ffa20cc-5fc8-4e3a-99af-d71996641e7a}
Bing	extension	1.3	true	bing@search.mozilla.org
Chambers (UK)	extension	1.0	true	chambers-en-GB@search.mozilla.org
Contextlets	extension	0.4.1	true	{dcf34dbe-ccd1-11e7-8f66-ff8971474715}
DuckDuckGo	extension	1.1	true	ddg@search.mozilla.org
eBay	extension	1.3	true	ebay@search.mozilla.org
Enhancer for YouTube™	extension	2.0.108	true	enhancerforyoutube@maximerf.addons.mozilla.org
Firefox Multi-Account Containers	extension	8.0.1	true	@testpilot-containers
Google	extension	1.1	true	google@search.mozilla.org
Let's get color blind	extension	1.0.0	true	letsgetcolorblind@hilberteikelboom.nl
Odoo Terminal	extension	8.3.0	true	{cdfbfc50-7cbf-4044-a6fb-cdef5056605c}
Privacy Badger	extension	2021.8.17	true	jid1-MnnxcxisBPnSXQ@jetpack
Refined GitHub	extension	21.11.9	true	{a4c4eda4-fb84-4a84-b4a1-f7c1cbf2a1ad}
Service Worker Detector	extension	2.4.0	true	{7f976419-2e7e-4ca5-983c-0fd0187e92ef}
Stylus	extension	1.5.21	true	{7a7a4a92-a2a0-41d1-9fd7-1e92480d612d}
Tampermonkey	extension	4.13.6136	true	firefox@tampermonkey.net
Temporary Containers	extension	1.9.2	true	{c607c8df-14a7-4f28-894f-29e8722976af}
uBlock Origin	extension	1.38.6	true	uBlock0@raymondhill.net
Web Archives	extension	2.1.0	true	{d07ccf11-c0cd-4938-a265-2a4d6ad01189}
Wikipedia (en)	extension	1.1	true	wikipedia@search.mozilla.org

Actual behavior

The "always open this in a container" shortcut is always enabled, because of its location in the address bar I regularly hit it when I just want to open or switch container.

Unlike other toolbar locations, the address bar can not be customised via the UI and probably requires mucking with the userChrome

Expected behavior

Being able to get rid of this icon as it's not in any way critical.

[loominade]

it certainly doesn't help that the two icons look almost identical:

I'd prefer a system wide feature to disable address bar buttons but a setting in the addons preferences might suffice?!

[xmo-odoo]

it certainly doesn't help that the two icons look almost identical:

Yep, very easy to confuse and hit the wrong one.

I'd prefer a system wide feature to disable address bar buttons but a setting in the addons preferences might suffice?!

I figure the icons on the left would probably be unacceptable to remove so the former would be unlikely to be acceptable, unless it's only the non-critical ones which go on the right? (can't say I've ever used the bookmark icon but it's distinctive so I don't think I've ever hit it by mistake).

[ouyen]

I find the method to hid this shortcut on this post : https://www.reddit.com/r/FirefoxCSS/comments/ok3mev/how_to_hide_the_multiaccount_containers_icon_in/

1. Enable userChrome.css support in Fx v69+(set toolkit.legacyUserProfileCustomizations.stylesheets to true in about:config)

2. Open about:support

3. Click on "Profile Folder" -> "Open Folder"

4. Create a sub-folder named "chrome"

5. Change into the new folder

6. Create a file named "userChrome.css"

7. Write userChrome.css as below:

#pageAction-urlbar-_testpilot-containers { display: none; }

8. Restart Firefox

[dannycolin]

Close #2066