Scrollable View changes position on Device Rotation

[reverse-unina]

When I perform these sequences of events, the scroll view on screen goes back to the top:

Sequence 1:

1. Click on Select a Wiki
2. Click on Available
3. Click on type Item in list
4. Click on wiki Item in list 5.Scroll Down
5. Orientation Change

Sequence 2:

1. Click on Select a Wiki
2. Click on type Item in list
3. Click on wiki Item in list 4.Scroll Down
4. Orientation Change

Sequence 3:

1. Click on Random Article
2. Scroll Down
3. Orientation Change