[Win] fast/text/selection-in-initial-advance-region.html is failing since Bug 204884 ComplexTextController::offsetForPosition is using TextBreakIterator::Mode::Caret, but it't not supported.
Created attachment 386179 [details] test case Because TextBreakIterator::Mode::Caret isn't supported, the caret can be moved into the inside of a combining character.
(In reply to Fujii Hironori from comment #1) > Created attachment 386179 [details] > test case > > Because TextBreakIterator::Mode::Caret isn't supported, the caret can be > moved into the inside of a combining character. Firefox for Windows also does so.
'ARABIC LETTER LAM' (U+0644) [ل] https://www.fileformat.info/info/unicode/char/0644/ 'ARABIC LETTER ALEF' (U+0627) [ا] https://www.fileformat.info/info/unicode/char/0627/ 'ARABIC FATHATAN' (U+064B) [ ً] Non-Spacing Mark [NSM] https://www.fileformat.info/info/unicode/char/064b/ U+0627 + U+064B → [اً] [ل] + [اً] → [لاً]