1443389 - New about:blank tab no longer has blank location bar (New Tab Override extension)

Status: RESOLVED DUPLICATE of bug 1446251

(Firefox :: Tabbed Browser, defect)

Description

[Matthew Turnbull [Bluefang]]

I use New Tab Override[1] to set my new tab page to be about:blank. Starting with the 714a94df1a99b933a4eef2149819d2af319a1ed5 nightly build, the location bar is no longer blank when opening a new tab.

Previous behavior:
* about:blank - location bar blank and focused.
* about:blank and set focus to web page - location bar blank and content focused.
* about:home - location bar blank and focused.
* about:home and set focus to web page - location bar blank and content focused.

Current behavior
Previous behavior:
* about:blank - location bar has the text "about:blank" and  is focused with the caret at the end of the text.
* about:blank and set focus to web page - location bar blank and content focused
* about:home - location bar blank and focused
* about:home and set focus to web page - location bar blank and content focused

Good:
https://archive.mozilla.org/pub/firefox/nightly/2018/03/2018-03-01-10-01-39-mozilla-central/
Bad:
https://archive.mozilla.org/pub/firefox/nightly/2018/03/2018-03-01-22-00-50-mozilla-central/

Push log:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=0f8f71b0b9d84e7732c07f841e395de516b31b66&tochange=714a94df1a99b933a4eef2149819d2af319a1ed5

I couldn't find hourly builds anywhere (assuming those even exist any more), so I can't narrow it down more. But reading through the pushlog didn't reveal anything that suggested this was an intentional change. But there were hundreds of changes, so I could have missed something.

[1] https://addons.mozilla.org/en-US/firefox/addon/new-tab-override/

Comment 1

[Gingerbread Man]

Regression range:
https://hg.mozilla.org/integration/mozilla-inbound/json-pushes?changeset=95a6bd5b90452da6eee11eb8ee53ef80c91565c6&full=1

(In reply to Matthew Turnbull [Bluefang] from comment #0)
> I couldn't find hourly builds anywhere (assuming those even exist any more),
> so I can't narrow it down more.

mozregression-gui can narrow it down more; the command line mozregression can presumably do the same.
https://mozilla.github.io/mozregression/documentation/usage.html