Steps to reproduce: 1. Select a package from the list, resulting in opening the preview pane on the right 2. Try to figure out how to close the preview pane again Expected results: The UI for closing the preview pane again should be obvious and easily discoverable. Actual result: I cannot close the preview pane. Either the UI for closing the preview pane is bug-level counter-intuitive and undiscoverable, or the feature is absent altogether. Workaround (unacceptable!): Use the "< Back" (*) item in the category browser to go up one category and select the subcategory again.
(*) The "< Back" label is back-translated from Polish.
*** This bug has been marked as a duplicate of bug 373293 ***