Noticed an issue when reviewing this story. To reproduce:
Sign in as test
Add announcement portlet to liferay site and add usera as site member
create role to add general announcement and assign to usera
click on configuration of announcement portlet in Liferay site
add "Add Entries" permission to role
sign in another browser as user a and verify that usera can add global entries - remain in the Manage Entries tab
in initial browser (as "test"), remove the "Add Entries" permission from the role
switch to usera browser and refresh the page
Manage Entries tab will have been removed as expected, but the Entries tab will display the contents of the Manage entries tab.
Adding an Entry from the Entries tab will allow usera to click on save, but result in a "action not complete" error message.