Bookmarked items don't show up in left pane when viewing a specific one in tablet mode

[minneyar]

Here's what happens:

1. Make a bookmark list with a few items in it.
2. In tablet mode (so items appear in a column on the left), epxand the Bookmarks section, then pick a particular list of bookmarks.
3. Tap one of the bookmarks in the right pane.
4. The data for the bookmark now appears in the right pane, but the left pane is now blank. In previous versions, the left pane would now contain the list of bookmarked items.