Loving all the new features! They are all very exciting.
Just wanted to echo what quoquus is saying. There is a counter-intuitiveness to the history feature at the moment. When the user is browsing the history and pushes "down", I suspect they are expecting one of two potential outcomes.
1) navigating the reverse direction in the history
2) navigation of the currently displayed search results.
Currently the functionality is in line with 2. But the problem, as I see it, is that this immediately pushes the user out of the history, so continued pushing of the up arrow after pushing the down arrow does not result in navigating to the next history item, it scrolls through the search results, circling back from result 1 to result 20.
Perhaps it could be configured so that if the user arrows to the first search result after a downward arrow press while browsing the history, the user can continue through the history instead of being taken from result 1 to result 20.
Alternatively, what about choosing an alternative keystroke? Page up/down or fn-up arrow/down arrow?
either that or we can all just learn to adapt!