Это у вас какой-то неправильный RAR у вас в системе. У меня:
$ rar a test.rar ЭтоТест.txt
RAR 5.40 Copyright (c) 1993-2016 Alexander Roshal 15 Aug 2016
Trial version Type RAR -? for help
Evaluation copy. Please register.
Creating archive test.rar
Adding ЭтоТест.txt OK
Adding data recovery record
Done
$ rar lt test.rar
RAR 5.40 Copyright (c) 1993-2016 Alexander Roshal 15 Aug 2016
Trial version Type RAR -? for help
Archive: test.rar
Details: RAR 4, recovery record
Name: ЭтоТест.txt
Type: File
Size: 12
Packed size: 12
Ratio: 100%
mtime: 2018-05-05 22:34:42,000
Attributes: -rw-r--r--
CRC32: 26BEE9C9
Host OS: Unix
Compression: RAR 3.0(v20) -m0 -md=128K
$ unrar lt test.rar
UNRAR 5.30 beta 2 freeware Copyright (c) 1993-2015 Alexander Roshal
Archive: test.rar
Details: RAR 4, recovery record
Name: ЭтоТест.txt
Type: File
Size: 12
Packed size: 12
Ratio: 100%
mtime: 2018-05-05 22:34:42,000
Attributes: -rw-r--r--
CRC32: 26BEE9C9
Host OS: Unix
Compression: RAR 3.0(v20) -m0 -md=128K