philc/vimium — comment on commit 5a663e6b2ffd5f55e518f89ce693eca0bfed134f
File: vimiumFrontend.js line 490
By philc:

I imagine Ilya added this as a workaround for when Google added instant search, and escaping out of the search box wasn't working. I tried your change with google search and it worked OK for me (although their textbox is really dodgy, as always).