Version 149.0 by the way

It was disabled much longer for me. They didn't plan to ship laxByDefault since 2024.

I don't think that something has been changed about it in 149.

Any reference on the rollback from defaulting to Lax? I can easily find that it was defaulted to Lax around 2020 or 2021, but can't find any reference or announcement around not being the default any longer. Most of the peers I deal with assumed and thought Firefox still defaulted, so FYI

https://bugzilla.mozilla.org/show_bug.cgi?id=1812297

See also:

• samesitelax - [meta] Enable sameSite=lax by default

(please do not comment in bug reports
https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)

Bit different from this type of announcement https://hacks.mozilla.org/2020/08/changes-to-samesite-cookie-behavior/

Anyway.... Thanks for the clarification

Hi,

Since the answer appears to be found, I've marked TyDraniu's reply above as a solution to highlight it for other users. If you disagree, you can click the Undo button under it and then mark any other reply as a solution,