1259133 - Firefox 45 shows session restore screen on every start

Status: UNCONFIRMED

(Firefox :: Session Restore, defect)

Description

[Aleksey]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20160315153207

Steps to reproduce:

Firefox 45 shows session restore screen on every start even with correct exit, restart, etc

Comment 1

[Loic]

How do you close Firefox? When turning off your computer?

Comment 2

[Aleksey]

Any: turn off computer, or Menu File->Exit. Bug exists in both: Linux and Windows.

Comment 3

[Flo]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0

Same issue here for quite a while, on three different computers running Windows 7 SP1 x64.

As Aleksey reported, any way of closing Firefox *can* trigger the behavior on restart, but it doesn't happen 100% of the time for me, rather 75%.

I keep 50+ Tabs open, which might be a contributing factor.

Comment 4

[Aleksey]

Same for me.

Comment 5

[Aleksey]

Bug seems fixed in Windows. Still exist in Linux, Firefox 47, reproducible in:
- openSUSE 42.1, DE: KDE
- Linux Mint 18, DE: MATE
Happen in 100% cases on session logout/PC restart/Shut down. Works fine on normal exit.

Comment 6

[Wayne Mery (:wsmwk)]

Very strange. I don't think I've ever seen this reported before.

Would you say this is a regression, starting around the time you reported 2016-03-23?
And if so, can you get a regression range?

Comment 7

[Aleksey]

Still exists in FF 48.

Comment 8

[Aleksey]

So range is 45-48

Comment 9

[Aleksey]

Found the way to reproduce in 100%:
- Open 2 FF windows with many tabs in each
- Exit current OS session
- Next time you'll see session restore screen (probably OS can't close FF with 2 windows properly - kills whole process or something like this).

If I leave only single window with many tabs opened, then next time FF opens properly and restores all the tabs correctly.

Comment 10

[Aleksey]

Now reproducible in FF 49 even with single window.

Comment 11

[Aleksey]

Reproducible in Linux Mint 18 MATE desktop as well, FF 50.

Comment 12

[BugBot [:suhaib / :marco/ :calixte]]

In the process of migrating remaining bugs to the new severity system, the severity for this bug cannot be automatically determined. Please retriage this bug using the new severity system.

Comment 13

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:dao, could you have a look please?

For more information, please visit BugBot documentation.