Incorrect category for u064E

[wickedest]

Maybe I am using this wrong, but it seems that this is returning Cc for unicode value u064E, and according to that page, it should be "Mn" (Mark, Nonspacing).

const unicode = require('unicode-properties');

const parts = ['\u0643', '\u064E'];
console.log('string:', parts.join(''));
const hex = parts.map(x => x.codePointAt(0).toString(16).toUpperCase().padStart(4, '0'));
console.log('unicode:', hex);
console.log(`${hex[0]}: ${unicode.getCategory(parts[0])}`);
console.log(`${hex[1]}: ${unicode.getCategory(parts[1])}`);

The above outputs:

string: كَ
unicode: [ '0643', '064E' ]
0643: Cc
064E: Cc