Trying the testcase linked from https://github.com/w3c/character_phrase_tests/issues/54 on macOS, I see the problem with Firefox 113, but I get the "expected" question mark (rendered from Noto Sans Nko with Firefox Nightly (115).
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Trying the testcase linked from https://github.com/w3c/character_phrase_tests/issues/54 on macOS, I see the problem with Firefox 113, but I get the "expected" question mark (rendered from Noto Sans Nko) with Firefox Nightly (115).