ShareActionProvider becomes small after first use

[antoni-alvarez]

Tha ShareActionProvider button becomes small after use it for first time, when appear the button for most used share app. Tested on Galaxy Nexus with stock 4.2.1:

[antoni-alvarez]

This was introduced in 4.2.0 release, I downgraded to 4.1.0 and the problem is solved.

Now the ShareActionProvider looks perfect after use it for first time:

[SimonVT]

Please add a test case to the known-bugs sample on the dev branch.