This was an update in calibre 1.11:
from
http://calibre-ebook.com/whats-new:
Quote:
|
Originally Posted by @calibre-ebook.com changelog
Remove the button to toggle search result highlighting from next to the search bar, as too many people click it accidentally and then do not realize what they have done, despite the confirmation message that pops up. The button can be restored via Preferences->Searching
|
See attachment.