1355314 - Accessing your inbox from Outlook.com freezes and makes Firefox sluggish until user closes the tab

Status: RESOLVED INVALID

(Firefox :: Untriaged, defect)

Description

[Richard O]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0
Build ID: 20170323105023

Steps to reproduce:

Log-in to Outlook.com


Actual results:

Firefox loads the page but at a certain point of loading, Firefox will become sluggish or sometimes completely freeze until you close the tab or restart the browser


Expected results:

Firefxo should load the page with no problems

Comment 1

[Simona Badau, Desktop QA]

I could not reproduce this issue, tried using the latest Nightly 55.0a1 (Build ID: 20170413030227) and Firefox 52.0.1 (Build ID: 20170316213829) on Windows 7 x64.

Richard, could you please try to reproduce this issue using Firefox with a new profile?
https://support.mozilla.org/t5/Install-and-Update/Use-the-Profile-Manager-to-create-and-remove-Firefox-profiles/ta-p/2914

Comment 2

[Richard O]

Hi Simona, I did as what you requested and it didn't also have the issue. I finally pinned the problem and it seems that a particular add-on is responsible for the constant freeze/crash. What's weird though is that the bug persisted even on safe mode but once I completely uninstalled it, it went fine.