Your changes doesn't get applied correctly.
Eclipse 4 persists certain user changes in your application. During development this might lead to situations where changes are not correctly applied and displayed, e.g. you define a new menu entry and this entry is not displayed in your application.
You have to add -clearPersistedState
as a program argument for your application or set the Clear
flag in the Main tab of your Run configuration.
Take a look here for further information and a more detailed description.