Switching to Russian keyboard from Japanese still types in English I feel like this (bug?) started happening after one of the latest OS updates applied.

I'm currently using Mac OS X High Sierra (10.13.2).

Steps to reproduce:


Start OS
Switch language to Russian
Able to type in Russian
Switch language to English


Result:

Still types in English, even though it shows Russian as selected language....
There is a known bug with 10.13.2: Switching from Japanese (or Chinese or Korean) to Cyrillic, Arabic, Hebrew, or Greek will not work, you must first switch to US (or some other Latin layout) in between.

Ask Apple to fix this via their feedback page.