While we are complaining about Microsoft and Emoji's -- they need to grow a spine and bring back Emoji Flags. If you weren't aware Microsoft removed all flags to avoid geopolitical backlash over Taiwain, etc.
Country flag emojis are actually just specialised glyphs for pairs of characters, taken in pairs to form a country-code. If the system doesn't know how to render a given country code, it will just fallback to displaying the country code (often stylised as white on blue tiles) instead.