1731013 - Browser back goes to wrong page if Fission is enabled

Status: RESOLVED DUPLICATE of bug 1725680

(Core :: DOM: Navigation, defect, P1)

Description

[Alice0775 White]

This problem only occurs when Fixxion is enabled.

Reproducible: Yes, almost 100%.

Steps To Reproduce:

1. Enable Fission
2. Open https://www.watch.impress.co.jp/
   --- The top page is displayed as expected. Good.
3. Click on a news topic link
   --- Page goes to the news page as expected. Good.
4. Browser back
   --- Page goes to the wrong news page instead of the top page. Bad BUG!.
   If not reproduce, Repeat steps 3 and 4 with different news topics.

Actual Results:
Browser back will show the wrong page (two or more previous page).

Expected Results:
The previous page should be displayed.

Comment 1

[Alice0775 White]

Attachment: screenshot, the topic links

Comment 2

[Alice0775 White]

STR
top page -> click on 1st topic -> click on back button -> click on 2nd topic -> click on back button

Actual results:
The 1st topic is shown instead of top page.
And back/forward dropdown is wrong checked

✔2nd topic
  1st topic
  top page
  New Tab

Expected Results:
The top page should be shown.
And back/forward dropdown is

  2nd topic
✔top page
  New Tab

Comment 3

[Alice0775 White]

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=ae2d4704c3a7a00708d4bc873d4578ec21ecd6a7&tochange=cd1fcf6de56339ea4c69cacdb5ed3249479b681c

Comment 4

[Chris Peterson [:cpeterson]]

Tentatively assigning to Olli because this is a regression from his fix for bug 1697905.

Comment 5

[Olli Pettay [:smaug][[e-mail]]]

I managed to reproduce this once (out of over 50 tries), but I think I realized what can go wrong here.
But this is anyhow basically a dup of bug 1725680.
Comment 3 was very useful!