User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:108.0) Gecko/20100101 Firefox/108.0

Steps to reproduce:

Opened new tab.

Actual results:

New tab screen is fully white.

Expected results:

My theme is dark, thus it should be a dark background, not white.

The Bugbug bot thinks this bug should belong to the 'Firefox::Theme' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0

Hi,

I have tested your issue on latest FF release 106.0.3, Beta 107.0b8 and latest Nightly build 108.0a1 (2022-11-02) and could not reproduce it using macOS 10.15 and Windows 10.
If the issue is still reproducible on your end, can you please retest this using latest Nightly build (https://nightly.mozilla.org/) and report back the results? When doing this, please use a new clean Firefox profile (https://goo.gl/AWo6h8) to eliminate the potential causes.
Indeed, the newly opened tab has a white background if it is set to blank page, which is this bug 1713875.

Thanks for the report.

(In reply to Alin Ilea from comment #2)

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0

Hi,

I have tested your issue on latest FF release 106.0.3, Beta 107.0b8 and latest Nightly build 108.0a1 (2022-11-02) and could not reproduce it using macOS 10.15 and Windows 10.
If the issue is still reproducible on your end, can you please retest this using latest Nightly build (https://nightly.mozilla.org/) and report back the results? When doing this, please use a new clean Firefox profile (https://goo.gl/AWo6h8) to eliminate the potential causes.
Indeed, the newly opened tab has a white background if it is set to blank page, which is this bug 1713875.

Thanks for the report.

Note I AM using nightly already. At the time of posting, I was using the latest.

Weird, the bug you link is set as enhancement and hasn't been touched in a year. This started happening to me yesterday, before that the tab was black as it should be.

Steps to reproduce in Firefox Nighly 108.0a1 (2022-11-03), (64-bit) Build-id 20221103095349 under Windows 10:

1. Create a new profile

2. In Menu → Settings → "Home" side tab, Set "New tabs" to "Blank Page". I also have set "Homepage and new windows" to "Blank Page".

3. In Menu → "Themes" side tab, set "Saved Themes" / "Dark" to Enabled.

4. Stop and restart Firefox Nightly. Now, when you open Firefox, you see a dark initial tab. But opening a new tab shows white, instead of black.

I just ran a mozregression-gui specifying that new profile I created with the above steps, and the regression stopped at:

2022-11-03T16:19:22.506000: DEBUG : Found commit message:
Bug 1676492, when new tab page is configured to show a blank page, it should not be added to session history, r=Mardak

Differential Revision: https://phabricator.services.mozilla.com/D156303

2022-11-03T16:19:22.506000: DEBUG : Did not find a branch, checking all integration branches
2022-11-03T16:19:22.506000: INFO : The bisection is done.
2022-11-03T16:19:22.527000: INFO : Stopped

Adding to comment 4:
Manually loading about:blank does not exhibit the bug. "Homepage and new windows" should not be affected, only "New tabs".

@L: Can you mark the bug as regressed by 1676492? And maybe "STR in comment 4" in the Whiteboard? Thanks.

I am able to reproduce the issue in the latest Nightly 108.0a1 (2022-11-03) on Windows 10 as well. This is a recent regression caused by bug 1676492.
@Neil, could you please take a look over this?

https://hg.mozilla.org/mozilla-central/rev/510fd2811bcd

Verified - Fixed in latest Nightly 108.0a1 (build id: 20221106212619), using Windows 10, macOS 10.15 and Ubuntu 20.