My problem in the same as described in the Google product forums with Chrome 21.0.1180.89.
When I type a search in the Chrome omnibox, after typing
enfrSpace Chrome replaces it by a search in the history and I end up googling my search prefixed by the keyword.
Example: I end up googling
enfr former, instead of translating
former from English into French.
In my case, the search is the following in the Other search engines options:
How do I restore the normal behavior (searching on the specified search engine instead of the default search)?
I have seen that clearing browsing data while I did the search fixes the problem. But I am not sure if it won't reappear.