The new update FF 128.0 introduces “the experimental Privacy Preserving Attribution API, which provides an alternative to user tracking for ad attribution. This experiment is only enabled via origin trial and can be disabled in the new Website Advertising Preferences section in the Privacy and Security settings.”
Note that this is annoyingly enabled by default and you need to disable it for each user if you don’t want it.
What is wrong with these software companies that they think it is OK to add a new feature that nobody asked for and then force users to opt-out rather than opt-in ?
Windows 10 Home 22H2, Acer Aspire TC-1660 desktop + LibreOffice, non-techie