11631 - Forward and back buttons erratic when named anchor can't be followed

Status: VERIFIED FIXED

(Core Graveyard :: Embedding: APIs, defect, P2)

Description

[Nicholas Cull]

This behaviour occurs on the 1999081008 build of Mozilla on Windows NT 4
Workstation.

Steps to reproduce:
1. Launch Mozilla
2. Point Mozilla at this bug report.
3. Follow the link to the test case
4. From the test case, follow the hyperlink at the top of the page
5. Notice the URL bar has changed, but the page is not updated
6. Now press the back button
7. The URL bar now goes back to the original URL of the test case
8. Press back a second time to go back to this bug report
9. Now press forward again to get to the test case
10. You can now press the forward button indefinitely and the page will not update

Expected behaviour:

* In step 5, if the named anchor cannot be found, and the page we're visiting is
  the same as the current page, the new hyperlink should not be added to the
  URL history.
* In step 10, the forward button should be disabled.

Comment 1

[Nicholas Cull]

Attachment: Test case showing problems relating to named anchor.

Comment 2

[Nicholas Cull]

See also bug 11629, which may be related to this one.

Comment 3

[Radha on family leave (not reading bugmail)]

Fix checked in. Please verify

Comment 4

[Nicholas Cull]

Verified.

Comment 5

[Nicholas Cull]

Verified on Windows NT 4 Workstation using build 1999101908.

Comment 6

[Pulsebot]

Pushed by ffxbld-merge:
https://hg.mozilla.org/releases/mozilla-beta/rev/91e2e502bfe8
[fenix] For https://github.com/mozilla-mobile/fenix/issues/11631: Move report site issue extension to main menu. (https://github.com/mozilla-mobile/fenix/pull/15884)