US Immigration from Philippines

Hi everyone,

this was probably ask before but I cant find an answer for my specific question.

So a week ago my fiancee receive her passport and visa packet, there was a big tear so we sent it back to us embassy manila. Fast forward, she received it back just today. the envelope was sealed back but this time there s a second sealed plastic with papers in it but the front and back cover is a blank white page. We also noticed that the yellow envelope got thinner, thinking they separated them because it was too thick? Maybe. Is this normal or happened to anybody here before?

thank you very much! Appreciate in advance.