1247254 - Sessionrestore partly broken when blocking all cookies (New Tab)

Status: RESOLVED DUPLICATE of bug 1232955

(Firefox :: Session Restore, defect)

Description

[subjut]

Attachment: new_tab.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:44.0) Gecko/20100101 Firefox/44.0
Build ID: 20160205155049

Steps to reproduce:

I installed Firefox with a fresh profile. Then:
- goto Options -> General and select "Show my windows and tabs from last time" for startup
- goto Options -> Privacy and block all cookies
- open a few tabs to a few sites. Then close Firefox and start it again. You might have to repeat that step a few times.


Actual results:

All tabs are opened, but some tabs have a title "New Tab" and are empty instead of displaying the page from the previous session (see attachment). The affected tabs still display the favicon from that website.
This only seems to affect newly opened tabs in the previous session. I have not been able to figure out, if some websites are affected deterministically or if it happens randomly to all opened websites.
If I remember correctly, this started with Firefox 43.


Expected results:

All tabs should open the website from the previous session.