Open Bug 1957207 Opened 28 days ago Updated 23 days ago

The -private command line argument doesn't open Firefox in private mode

Categories

(Firefox :: Private Browsing, defect, P3)

Firefox 136
defect

Tracking

()

People

(Reporter: hrtuybxi, Unassigned)

Details

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0

Steps to reproduce:

Open Firefox with the -private command line argument: firefox -private

Actual results:

Firefox opens in a regular mode instead of in a private mode with a message You are currently not in a private window. and a button Open a Private Window.

Expected results:

Firefox opens in a private mode.

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

Component: Untriaged → Private Browsing

Some context is in Bug 1048286 comment 10. However I also do see a difference to the reported behavior from three years ago where (only) the first window was in permanent private browsing. I see the same behavior as the reporter: for me the first window doesn't seem to be in (permanent) private browsing. It retains the history and shows a "You are currently not in a private window." text on startup (stemming from about:privatebrowing, that opens with this option).

Documentation I found regarding this option: https://wiki.mozilla.org/index.php?title=Firefox/CommandLineOptions&oldid=1251765#-private

However, I don't see the option listed in firefox --help:

Status: UNCONFIRMED → NEW
Ever confirmed: true
Severity: -- → S3
Priority: -- → P3
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