There is a bug in MenuManager in EasyOS when it is used in a language other than English
When you change the category the entries (in the column "Éléments du menu visibles" in the pîcture) are never displayed:
Cause of the problem :
In fact, when you choose a category, for example "Système de fichiers" like in the picture, the script /usr/local/easyjwm/menumanager call an internal function "Système de fichiers" that do not exist. The real name of the function is Filesystem (= "Système de fichiers" in French)