1108324 - Firefox uninstalls extensions at Firefox update/upgrade time

Status: RESOLVED INCOMPLETE

(Firefox :: Untriaged, defect)

Description

[Mihai Dobrescu]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0
Build ID: 20141125180439

Steps to reproduce:

I have this issue since upgrading/updating Firefox to version 33.
I have several Firefox installations synched on desktop PCs.



Actual results:

Each time Firefox is updated/upgraded to a new minor or major version, it uninstalls addons, or something else does.
It is about more 30 addons (I have usually 128...) which disappear spontaneously, without any warning. 
As I have FEBE, I could restore them easily, as all the addons are copied in a backup folder, but it is annoying and harder under Linux (there I must add ona by one, Firefox under KDE takes only the first addon in the list of drag and drop).


Expected results:

Obviously, no addons should have been uninstalled, at least not without asking first.

Comment 1

[Mihai Dobrescu]

Being synched, the uninstall is propagated if I don't manage the addons in time.
I am admin on all the PC in question.

Comment 2

[Loic]

It could be an issue with your profile. Did you test to update a clean profile (https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles) with only 2 or 3 add-ons installed?

FF33 is available here: http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/33.1.1/

Comment 3

[Mihai Dobrescu]

I already have 34.0, but I have seen 34.0.5, which is released earlier, although it seems newer...

Comment 4

[:Gijs (he/him)]

(In reply to Mihai Dobrescu from comment #3)
> I already have 34.0, but I have seen 34.0.5, which is released earlier,
> although it seems newer...

Yes, the idea is that you could put the copy of 33.1.1 somewhere else, create a new profile, add only a few add-ons, then update that new profile to 34 and see if you can reproduce.

Alternatively, you could create a copy of the original profile and see if you can narrow down (using this update path) which add-ons are related to (other) add-ons being removed.

As it is, I am not aware of any code in Firefox which is /supposed/ to remove add-ons after an upgrade... disable add-ons that are incompatible, yes, but not remove outright. So it seems more likely this is related to one of your 128 add-ons...

Comment 5

[Wayne Mery (:wsmwk)]

Mihai, what information were you able to obtain?

Comment 6

[Mihai Dobrescu]

I couldn't find the reason, sorry.