On Tue, 21 May 2019 00:36:33 +0000 Andrew Glass via Unicode <unicode@unicode.org> wrote:
> This is because the sequences include U+0EBA which was added in > Unicode 12.0. Edge has not updated for Unicode 12 at this time. That suspicion was why I was hoping it was a temporary aberration. When it is so updated, will it support these sequences? Yes, no or undecided? The Lao section of Microsoft Typography has not yet been updated. I've raised a formal issue at https://github.com/MicrosoftDocs/typography-issues/issues/238 . Richard.