The problem here is the 3rd party apps like Netbeans 8. They don't show right because of scaling issues. Fortunately is can be easily fixed by doing a bit of editing a text file.
In order for Netbeans 8 to display right in 4k resolution displays on Windows 8 you have to:
- Open for edit netbeans.conf file. It should be located at c:\Program Files\Netbeans 8.0\etc folder
- Change -J-Dsun.java2d.dpiaware=true to -J-Dsun.java2d.dpiaware=false
And we should be set.