So im trying to make custom forms to this portlet, so the user has to enter additional metadata about the uploaded file, but the problem is that if i add either select box or radio button, none of the new metadata shows up in file view, but without them it works fine. i searched database and the data is there, but it doesnt display up. Tried to lookup the files which work with that but without any luck. Mby someone can confirm this bug or knows any solution?

Yep, it's a known bug and it's solved.

Wil be available in 6.1.1 GA 2, which would be released in few weeks (mid april).

If you want to test, download latest nightly build.

Thanks for the answer.

Any tips how could i fix this on my current 6.1 CE?

Your issue is this:

http://issues.liferay.com/browse/LPS-24675

As you can see, there are several related issues, and even this issue causes others, so I guess would be difficult to create a patch.