Mykola Yeriomin is credited as "Renaissance man" in Russian, but "reneaissance" is spelled with a lower-case letter.
Russian word for "accordion player", "akkordeonist" is misspelled as "akkordenist" as a result of a typing error.
A shot of Mikhail Bondarev as a singer was obviously filmed in 16:9 aspect ratio and yet is shown in 4:3.
Mikhail Bondarev is said to be born in 19992 (sic) explicitly. It is actually a deliberate element of fictionalization and a friendly in-joke.