990186 - Placing addon-button next to newtab-button and disabling the addon also removes the newtab-button

Status: RESOLVED DUPLICATE of bug 1370791

(Firefox :: Toolbars and Customization, defect)

Description

[Elbart]

STR:
- Install any addon with a toolbar-button, preferably a restartless one. SessionManager, AdBlockPlus or the example-addon linked at the bottom of [1], any will do.
- Place the addon-button between the tabs and the newtab-button in the tabbar, so the addon-button is left of the new-tab-button.
- Open about:addons and disable the addon.
(- Restart Firefox when using a non-restartless addon)

[1] https://blog.mozilla.org/addons/2014/03/13/new-add-on-sdk-australis-ui-features-in-firefox-29/

ER:
The addon-button gets removed and the newtab-button stays where it was.

AR:
The addon-button gets removed and so does the newtab-button: http://i.imgur.com/B7vJD1b.gif
But the newtab-button is visible when "Customization" is open.


This bug can be triggered in versions from at least August 2011, so it's no Australis-only bug.
_____

Workarounds: 

- Full reset with "Restore Defaults"
- Reenabling of the addon and placing the newtab-button to the left of the addon-button once. Afterwards the addon can be disabled and the newtab-button stays.

Comment 1

[Alice0775 White]

This problem appeared since landing of Bug 457187

Comment 2

[Worcester12345]

Any status update on this one?

"WFM", now that Bug 457187 is fixed?

Comment 3

[:Gijs (he/him)]

This isn't fixed, but bug 1370791 has more details, so duping forward.