firefox/testing/web-platform/meta/css/css-display/display-math-on-pseudo-elements-001.html.ini

[display-math-on-pseudo-elements-001.html]
  [computed display on ::before and ::after for <div class="block">]
    expected: FAIL

  [computed display on ::before and ::after for <math class="block">]
    expected: FAIL

  [computed display on ::before and ::after for <mrow class="block">]
    expected: FAIL