1137727 - Observer services sends notification twice if called from component code

Status: RESOLVED INCOMPLETE

(Firefox :: Untriaged, defect)

Description

[Denis]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0
Build ID: 20150222232811

Steps to reproduce:

Call observer service's method notifyObservers() from Javascript component code.


Actual results:

observe()  method in browser window overlay is called twice.


Expected results:

observe() should be called once only.

Note: I made double-sure that addObserver() is called only once so there is only one registered observer for the topic.  The very same code worked fine in Fx 34. After Firefox has been upgraded to 36.0 the issue has manifested itself (Fx 35 was skipped). I also tried Firefox beta which upgraded itself to 37.0 and the issue is still there.

I also tried calling notifiyObservers() from browser overlay code with the very same topic and found that it worked properly.

Comment 1

[ovidiu boca[:Ovidiu]]

Hi,
Do you still have this problem? If yes please follow below steps and also add a test case or a screen recorder to see the steps, please use this link: http://screencast-o-matic.com/home

Please download the Firefox Nightly from here: https://nightly.mozilla.org/ and retest the problem.

If you still have the issue please create a new profile, you have the steps here:https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles?redirectlocale=en-US&redirectslug=Managing-profiles#w_starting-the-profile-manager

Please test if the issue can be reproduced in the safe mode of Firefox: https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

Comment 2

[ovidiu boca[:Ovidiu]]

Hi,
Marking this as Resolved: Incomplete due to the lack of response from the reporter.
Reporter, please feel free to reopen it if you are still having this issue on the latest Firefox version.