firefox/testing/web-platform/meta/css/css-anchor-position/position-try-ident-function.html.ini

[position-try-ident-function.html]
  [Property position-try-fallbacks value 'ident("--myident" calc(42 * sign(1em - 1px)))']
    expected: FAIL

  [Property position-try-fallbacks value 'flip-block, ident("--myident" calc(42 * sign(1em - 1px)))']
    expected: FAIL

  [Property position-try value 'ident("--myident" calc(42 * sign(1em - 1px)))']
    expected: FAIL

  [Property position-try value 'most-width ident("--myident" calc(42 * sign(1em - 1px)))']
    expected: FAIL