When item's length in poll more than 50 incorrect error message appears

From AC:
"Items - list of items. Each line in list is one item in voting. Item's length should be between 3 and 50 characters including. By default it is empty."

Create poll with this variant: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa1"

Actual result: Incorrect error message "длина должна быть:

-

" appears

Expected result: Correct error message "длина должна быть: 3 - 50" appears