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Strangely lately Firefox has been failing both Acid2 and Acid3 tests (see https://www.acidtests.org/ https://www.acidtests.org/) even though it used to pass the

Strangely lately Firefox has been failing both Acid2 and Acid3 tests (see https://www.acidtests.org/ https://www.acidtests.org/) even though it used to pass them years ago.

komali2 7y ago
...so? > and the Acid Tests are correspondingly no longer being maintained. Acid3, in particular, contains some controversial tests and no longer reflects the consensus of the Web standards it purports to test, especially when it comes to issues affecting mobile browsers. The tests remain available for historical purposes and for use by browser vendors. It would be inappropriate, however, to use them as part of a certification process, especially for mobile browsers.
eropple 7y ago
Not strange, as I understand it. Neither Acid2 nor Acid3 reflect current CSS specifications. And Acid3 was always a bit contentious.