Last modified: 2014-05-07 22:31:20 UTC
1. Go to some page, keep it unscrolled (reading the beginning) 2. Click a link 3. Scroll down until the search bar is hidden 4. Press back. Now the search bar doesn't appear and it's impossible to scroll up to make the search bar shown.
Change 131629 had a related patch set uploaded by Dbrant: Ensuring that the Search bar is visible when Back is pressed. https://gerrit.wikimedia.org/r/131629
Change 131629 merged by Dr0ptp4kt: Ensuring that the Search bar is visible when Back is pressed. https://gerrit.wikimedia.org/r/131629
Seems fixed to me.