The "Search" on the "Pages" tab appears to intermittently not display results. Using 2.0.3, fresh install, added pages as follows (no sidebar content on these test pages):
Searching for "tgh" displays no results, however this is in the logs: https://gist.github.com/2286650
It appears the first 3 pages are being found, per this line:
SELECT "refinery_pages".* FROM "refinery_pages" WHERE (refinery_pages.id IN (5,6,7)) ORDER BY lft ASC
Conversely, a search for "tghtgh" shows the last page is being found (or so it seems):
SELECT "refinery_pages".* FROM "refinery_pages" WHERE (refinery_pages.id IN (8)) ORDER BY lft ASC
You can see from this screenshot, it doesn't display results:
Strangely enough, search for "About" works, and the default About page is displayed in the results.
Heh he... was it a slip that I put my wonky admin menu in there on the screenshot? Maybe :-)
The search functionality you're referring to is actually built in Refinery CMS itself and this repo is for frontend searching.
I tried to reproduce this issue (using master branch) but I didn't succeed. See attached screenshots: