Preview search functions doesn't work.

I cannot search for terms with special characters and characters outside standard English alphabet.

Something got messed up with previous update (not the current one which I just did today, already in previous one I noticed that) with how the Search function works in Preview. I can no longer search for terms in my own language, which has characters like „ó ł ń ą ć ź”. As soon as I type one of special characters the search makes this click sound and stops the search for anything other than the letters preceding the character. Example - I’m trying to look for word „KSIĘGA”, wich has Ę in it. Preview only looks for KSI and breaks the search as soon as I type Ę. And it is like that with every special letter. It’s no longer usable, I have to use Adobe PDF or other third party applications.

Also, searching using „” doesn’t work anymore.

This is really bad, as Preview becomes basically unusable in terms of quick searching for info in any language that is not English.