When performing quick find search in CRM 2015 update 0.1 the field containing numbers only in single line text whose format is text, yields inconsistent results.
eg : field contains "00001002456" whose format is text

when performed quick search for "2456" it does not return anything.

Similarly, when performed quick search for "CRT - 5" it returns random results.

I would like to know what is the limitation and requirement for quick find search in public facing article.