Nexus 7 Share Dialog No Longer Showing Up After KitKat Before the KitKat upgrade, tapping "Share" in apps would bring up a dialog that lists all apps that you can share to. After upgrading to KitKat, tapping this button only copies the link to the clipboard. 

I should note that this only happens on some apps, like these listed below:


Chrome
Bacon Reader
Hacker News 2
Trello


Is there a way to bring back the old functionality?
That's a known bug with Kitkat, not only affecting the Nexus but other devices as well. We discussed that on chat lately. A work-around is using an app like AppChooser, which replaces the share menu. As a side-effect, it even gives you several improvements above the built-in share menu, as e.g. the possibility to chose between grid and list display, or have the list sorted alphabetically versus last-used (where the latter would have your most frequently used share-targets always on top). You can even hide apps you don't want to see in the share menu (and make them visible via the "show all" button).

 
AppChoser (source: Google Play)

The only alternative I know of is Andmade Share, which offers comparable features.