Some NetVault GUI selectable items are overlapping each other or almost missing.
Some fields in the back-up Tabs were missing or unreadable on a new installation of the NetVault Backup 9.0.1 build2 Pure64 Edition on a RedHat 6.6 Enterprise version (see attached screenshot).
Make sure that all the pre-requisites have been performed as per Chapter 3 of the NetVault 9.2 Installation Guide on the following link:
Using any remote software like VNC can also cause this issue, but even launching the NVGui on the Linux Server directly had the same issue.
All the Xfonts were installed, including the preferred 75dpi fonts, but unfortunately this made no difference.
The issue was resolved by installing the xorg-x11-75dpi.noarch font using this command: