New answers tagged cyrillic
I believe the problem lies in the misconception about the use of the CJK environment - as @egreg said, it can't be enabled and disabled. Just enclose the whole document in one CJK environment and when using CJKutf8 (see here for what difference it makes) utf8 characters using latin script but outside of ASCII will be fine. Thus your MWE in a fixed version ...
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