PreferenceFragment: UI glitch because of orientation change
Provides an alternative implementation of Android's PreferenceActivity
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When using the library's PreferenceFragment with its restore default button bar shown, orientation changes of the device may cause the button bar to be shown at the top of the fragment, instead of at its bottom. This glitch occurs, when the PreferenceFragment's ListView has been scrolled down before rotating the device, so that the button bar became hidden.
Fixed in version 2.1.1.