Nem, mert nem hiba. man sort ;)
-V, --version-sort
Sort version numbers. The input lines are treated as file names
in form PREFIX VERSION SUFFIX, where SUFFIX matches the regular
expression "(.([A-Za-z~][A-Za-z0-9~]*)?)*". The files are
compared by their prefixes and versions (leading zeros are
ignored in version numbers, see example below). If an input
string does not match the pattern, then it is compared using the
byte compare function. All string comparisons are performed in C
locale, the locale environment setting is ignored.
PREFIX es VERSION-re tud illeszteni, a tobbi pedig a SUFFIX reszbe esik, ami alapjan nem rendez.