I've raised a bug with #AOSP about Android's lack of support for #Unicode.
https://issuetracker.google.com/issues/366415133
There are loads of Noto fonts that Google is missing from the project. Which means a large swathe of missing languages, characters, and symbols.
I'll write up a full blog post soon with all the details. If you know anyone who works on Android at Google, please give them a nudge (after the weekend, obvs!)
