The Postprocessor dialog box needs to be resized when searching through the lists of post processors.
SolutionPlease review the attached video.
In NX2406 the postprocess dialogue has been improved with a new framework. Once you "OK" the dialogue, it will remember the size, so the next time you open it, it will use the previously saved dimensions. It will solve the problem.
If you're using NX2312, you can use the feature toggle to turn on 'New Postprocess Dialogue'.