MacOS: Russian Keyboard Layouts Without Russian Flag

Apple has long provided English keyboard layouts with an ABC icon for English speakers who prefer not to have the US or other country flag in the top right corner of their screen all the time. Here you can find a set of Russian language keyboards that have a generic Cyrillic "Я" icon instead of a national flag.

(Install the .bundle file in /Library/Keyboard Layouts or Home/Library/Keyboard Layouts and then activate via System Preferences > Keyboard > Input Sources > + )

For a Russian layout with a Ukrainian flag icon, see this page.

MacOS: Russian PC Keyboard Layout Error

A poster the Apple Support Communities has pointed out that the Russian PC keyboard layout supplied with MacOS and iOS has an error: The key which is supposed to produce Ё (U+0401, Cyrillic Capital Letter IO) actually produces Ë (U+00CB, Latin Capital Letter E with Diaresis). A custom layout that corrects this for MacOS can be found here. It's not possible yet to make custom hardware layouts for iOS, so the problem cannot be fixed there.