Comment 10 for bug 1393485

After the recent changes to the UITK we noticed that the enabled property on header actions doesn't work any more and we have to use the visible property. This means that disabled header actions are now hidden from the user until they can be used, heavily reducing their discoverability.

For example (in the music-app), if I press'n'hold over an item in a list it turns into multiselect mode, before in the header you could see the greyed out actions informing the user what could be done once they select an item, such as add to queue, add to playlist etc. Now the user has to perform an extra step of selecting an item in the list to be informed what they can do with it. This slows down the user, reduces their confidence in finding features and causes confusion in trying to find header actions as they appear in much less cases now.