I am comparing two text files but the result that is returned in certain cases is wrong, I have verified that it happens when the file exceeds 200 lines and only in some cases.

In the comparison I only get the positive results from file2.

Input

These are the two text files that I compare.
I share them with Google drive links because they are very long:

1. file1
2. file2

Output

What it returns is:

different

EL BOSQUE ENCANTADO,El Bosque Encantado,"PRECIO
12,00�"

When it should return:

different

CIBELES DE CINE,Galer�a de Cristal de CentroCentro,"PRECIO
7,00�"

By testing I have seen that If I deleted an intro from the end of the files and leave them at 200 lines, it does it well but if I go over 200 lines it does it wrong.

Code

# BOOKSTORES
import difflib
import sys

# WE LOOK FOR THE DIFFERENCES AND PRINT THEM.
with open('file1.txt', encoding='utf8') as file_1, open('file2.txt', encoding='utf8') as file_2:
    diff = difflib.Differ()
    result = diff.compare(file_1.readlines(), file_2.readlines())
    result = [line for line in result if line.startswith(("+ "))]

    print(''.join(result))

sys.exit(1)

What am I doing wrong? Can it be done in another way that makes it correct?