1154552 - about:plugin seems to break the back button by making it go to a page in a deleted forward branch in e10s windows

Status: RESOLVED DUPLICATE of bug 1134518

(Firefox :: Tabbed Browser, defect)

Description

[(no longer active)]

The description of this bug weird, but the STR is simple:

1. Open a new tab (it is crucial to do that and not for example open a new window.)
2. Type about:support in the location bar and press enter.
3. Click on about:buildconfig.
4. Click Back.
5. Click on about:plugins.
6. Click Back.

You should be taken to about:support, but instead you're taken to about:buildconfig.  Pressing back again takes you to about:support.

Comment 1

[Tracy Walker [:tracy]]

Confirmed with STR's that this on e10s only.  

Note: after step 5, context click the Back button. Notice that about:buildconfig is in the list, before Troubleshooting Information.  about:buildconfig shouldn't be in the tab history at all, after step 4.

However, I am not able to reproduce this with regular web pages.

Comment 2

[Dave Townsend [:mossop]]

Something is going wrong copying the history to the new browser when we switch to remote for about:plugins. You casn reproduce this with a regular webpage if you change step 5 to "load any web URL".

Comment 3

[Mike Conley (:mconley) (:⚙️)]

I can no longer reproduce this using the STR from comment 0. ehsan, are you still seeing this?

Comment 4

[Bill McCloskey [inactive unless it's an emergency] (:billm)]

Dave, could this be a dupe of that bug where the history overflows and then remoteness change gets broken? I wasn't able to find that bug in bugzilla.

Comment 5

[(no longer active)]

(In reply to Mike Conley (:mconley) - Needinfo me! from comment #3)
> I can no longer reproduce this using the STR from comment 0. ehsan, are you
> still seeing this?

No, I can't reproduce any more.

Comment 6

[Dave Townsend [:mossop]]

Sounds similar to bug 1134518 yes and the range seems to match.