Do you have descriptions in the main applications, that is, the ones that are immediately accessible in the menu?
I don’t use Gnome so don’t really know what is the standard behavior but I don’t expect a gnome installation to mess with the installed applications desktop files. Maybe the behavior under Gnome is different or simply most of the applications don’t have a description.
I have exactly the same problem. Makes the whole system practically unusable.
I tried looking at the .desktop files – look fine, Program names are there.
I tried creating a new user. Same problem.
I tried strace on the “application-browser” application – but there is so much chaff that-s it hard to know where the configuration file could be found.
Control center and alacarte seem to have no controls over this.
There is no man page nor web page.
I don’t mind trying to figure things out – but you have to meet us half way with a less opaque system. This is like MSWindows.